CN105496515A - Puncture enhancing method and system - Google Patents
Puncture enhancing method and system Download PDFInfo
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- CN105496515A CN105496515A CN201510888869.9A CN201510888869A CN105496515A CN 105496515 A CN105496515 A CN 105496515A CN 201510888869 A CN201510888869 A CN 201510888869A CN 105496515 A CN105496515 A CN 105496515A
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- puncture needle
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3413—Needle locating or guiding means guided by ultrasound
Abstract
The invention discloses a puncture enhancing method. The method comprises the steps that when an ultrasonic probe transmits ultrasonic waves with a large deflection angle for scanning in this cycle so as to display a puncture needle image in an enhanced mode, ultrasonic waves with different transmitting angles and a specific waveform are transmitted for scanning; the insertion orientation of a puncture needle is identified according to scanned image frame data corresponding to the ultrasonic waves with the specific waveform at different transmitting angles; a corresponding large deflection angle when the ultrasonic probe transmits ultrasonic waves with the large deflection angle in a next cycle is adjusted according to the identified insertion orientation of the puncture needle, and the transmitting direction of the ultrasonic waves is perpendicular to or approximately perpendicular to the identified insertion orientation of the puncture needle under the large deflection angle. The invention further discloses a puncture enhancing system. By means of the puncture enhancing method and system, the insertion orientation of the puncture needle can be rapidly detected, and therefore the insertion direction of the puncture needle does not need to be fixed. Meanwhile, the complexity of puncture enhancing manipulation is reduced by automatically adjusting the large deflection angle of the ultrasonic probe, and the optimal display effect of the puncture enhancing image is always maintained.
Description
Technical field
The present invention relates to ultrasonic imaging technique field, particularly relate to puncture Enhancement Method and system.
Background technology
Nowadays puncture enhancement techniques is widely used in medical ultrasonic practice, for guiding doctor to carry out the operation of puncture class, improves procedure efficiency and safety.At present, the groundwork mode of the enhancement techniques that punctures is by adopting the region of hardware and software algorithm to puncture needle supporting specially suitably to strengthen, to improve visibility.Usually the ultrasonoscopy that ultrasound wave is formed is launched under needing increase by frame probe large deflection angle degree in prior art, to ensure ultrasonic emitting direction and puncture needle body as much as possible vertical (now the echo reflection best results of puncture needle needle body).In general, some gears also can be preset in probe deflection angle, are selected according to situation during actual operation by operation doctor.Really can strengthen the echo reflection of needle body in this way greatly, and then utilize software algorithm to the aciculiform region found in image and strengthened display.
Although the mode itself adopting large deflection angle degree is all well and good, but because current technology is all given user oneself (also namely operating doctor) by the right to choose of large deflection angle degree, the display effect of puncture needle corresponding under what deflection angle is best so just to need user oneself to judge, but but adds the difficulty that user uses so simultaneously.Although operator is user oneself, but general operation person is difficult to the insertion angle accurately judging puncture needle, simultaneously, because puncture needle during operation can not remain that a puncture angle is constant, thus user in piercing process is caused to be difficult to determine the best large deflection angle degree of ultrasonic probe, and then cause the display effect of puncture needle image often not as so perfection of design, although can arrange in pairs or groups, puncture supporter is to limit the direction of insertion of puncture needle, but will the flexibility ratio of surgical process greatly be declined so again, if and operation in need constantly to adjust angle, then can increase again the complexity of operation.
Summary of the invention
Main purpose of the present invention is to provide a kind of puncture Enhancement Method and system, be intended to how when not limiting puncture needle direction of insertion and increasing operation complexity, the convenient large deflection angle degree adjusting ultrasonic probe accurately strengthens the technical problem of display effect with the best obtaining puncture needle.
For achieving the above object, the invention provides a kind of puncture Enhancement Method, described puncture Enhancement Method comprises:
When epicycle ultrasonic probe transmitting large deflection angle ultrasound wave carries out scanning to strengthen display puncture needle image, the specific waveforms ultrasound wave launching some different emission angles scans;
According to the scanogram frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, identify the insertion orientation of puncture needle;
Large deflection angle degree corresponding when launching large deflection angle ultrasound wave according to the insertion orientation of identified puncture needle adjustment next round ultrasonic probe, wherein, under described large deflection angle degree, hyperacoustic transmit direction or near normal vertical with the insertion orientation of identified puncture needle.
Preferably, described specific waveforms ultrasound wave at least comprises transmitting sound field corrugated within the scope of ultrasonic listening is the plane wave of plane or the broad beam of almost plane.
Preferably, when launching described specific waveforms ultrasound wave and scanning, only launch once described specific waveforms ultrasound wave under same emission angle, wherein, when generating the picture frame corresponding to described specific waveforms ultrasound wave, whole ultrasonic scanning lines of disposable this picture frame of generation.
Preferably, described scanogram frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, identify that the insertion orientation of puncture needle comprises:
According to the image frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, carry out puncture check processing respectively to identify the insertion orientation of puncture needle, wherein, using the insertion orientation of the insertion orientation of puncture needle the highest for identification probability corresponding under different emission angle as real puncture needle.
Preferably, described puncture check processing at least comprises:
Image frame data described under different emission angle is carried out binary conversion treatment respectively, so that determine may for the collection of pixels of puncture needle in described image frame data corresponding under different emission angle;
Described collection of pixels corresponding under different emission angle is carried out Hough transformation process respectively, to determine puncture needle needle body place straight line parameter under coordinate system corresponding to Hough transformation;
According to the relevant parameter of puncture needle needle body, calculate the identification probability of puncture needle needle body place straight line parameter under different emission angle, and export the highest puncture needle needle body place straight line parameter of identification probability, wherein, can determine that puncture needle inserts orientation according to puncture needle needle body place straight line parameter.
Further, for achieving the above object, the present invention also provides a kind of puncture enhancing system, comprise some ultrasonic probes, puncture needle, display, described ultrasonic probe is for transmitting and receiving ultrasound wave, described display, for showing ultrasonic scanning output image, is characterized in that, described puncture enhancing system also comprises puncture intensifier; Wherein, described puncture intensifier comprises:
Increase transmitter module, for when described in epicycle, ultrasonic probe transmitting large deflection angle ultrasound wave carries out scanning to strengthen display puncture needle image, the specific waveforms ultrasound wave launching some different emission angles scans;
Puncture needle identification module, for the scanogram frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, identifies the insertion orientation of described puncture needle;
Large deflection angle adjusting module, for large deflection angle degree corresponding during ultrasonic probe transmitting large deflection angle ultrasound wave according to the insertion orientation adjustment next round of identified described puncture needle, wherein, under described large deflection angle degree, hyperacoustic transmit direction or near normal vertical with the insertion orientation of identified described puncture needle.
Preferably, described specific waveforms ultrasound wave at least comprises transmitting sound field corrugated within the scope of ultrasonic listening is the plane wave of plane or the broad beam of almost plane.
Preferably, described increase transmitter module, when launching described specific waveforms ultrasound wave and scanning, only launches once described specific waveforms ultrasound wave under same emission angle;
Described puncture intensifier also comprises:
Picture frame generation module, for generating picture frame corresponding to described specific waveforms ultrasound wave and when generating the picture frame corresponding to described specific waveforms ultrasound wave, whole ultrasonic scanning lines of disposable this picture frame of generation.
Preferably, described puncture needle identification module specifically for:
According to the image frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, carry out puncture check processing respectively to identify the insertion orientation of described puncture needle, wherein, using the insertion orientation of the insertion orientation of described puncture needle the highest for identification probability corresponding under different emission angle as real described puncture needle.
Preferably, described puncture needle identification module at least comprises:
Binary conversion treatment unit, for image frame data described under different emission angle is carried out binary conversion treatment respectively, so that determine may for the collection of pixels of described puncture needle in described image frame data corresponding under different emission angle;
Hough transformation processing unit, for described collection of pixels corresponding under different emission angle is carried out Hough transformation process respectively, with described puncture needle needle body place straight line parameter under determining coordinate system corresponding to Hough transformation;
Output unit, for the relevant parameter according to described puncture needle needle body, the identification probability of described puncture needle needle body place straight line parameter under calculating different emission angle, and export the highest described puncture needle needle body place straight line parameter of identification probability, wherein, the insertion orientation of described puncture needle can be determined according to described puncture needle needle body place straight line parameter.
In the present invention, when epicycle ultrasonic probe launches large deflection angle ultrasound wave to strengthen display puncture needle image, by increasing the specific waveforms ultrasound wave launching some different emission angles, thus the easy identification completing insertion orientation to puncture needle fast, and then without the need to the insertion angle direction of fixing puncture needle, improve the flexibility ratio that doctor carries out puncturing operation operation.Simultaneously, according to the insertion orientation vertical relation of hyperacoustic transmit direction under the insertion orientation of identified puncture needle and large deflection angle degree with the puncture needle identified, large deflection angle degree corresponding when realizing automatically adjusting next round ultrasonic probe transmitting large deflection angle ultrasound wave, thus reduce the complexity that puncture strengthens manipulation, and the ultrasonoscopy corresponding to puncture needle is made to remain best enhancing display effect.
Accompanying drawing explanation
Fig. 1 is that the present invention punctures the high-level schematic functional block diagram of enhancing system one embodiment;
Fig. 2 is that the present invention punctures the application scenarios schematic diagram of enhancing system one embodiment;
Fig. 3 is the basic handling schematic flow sheet of ultra sonic imaging in prior art;
Fig. 4 is the large deflection image in existing puncture enhancement techniques corresponding to large deflection angle ultrasound wave;
The scanogram that Fig. 5 punctures in enhancing system corresponding to specific waveforms ultrasound wave for the present invention;
Fig. 6 is the refinement high-level schematic functional block diagram of intensifier one embodiment of puncturing in Fig. 1;
Fig. 7 is the ultrasound wave schematic diagram launched under conventional B ultrasonic pattern in existing puncture enhancement techniques;
Fig. 8 is hyperacoustic Beam synthesis schematic diagram in existing puncture enhancement techniques;
Fig. 9 to puncture the specific waveforms ultrasound wave schematic diagram launched in enhancing system for the present invention;
Figure 10 to puncture the hyperacoustic Beam synthesis schematic diagram of specific waveforms launched in enhancing system for the present invention;
Figure 11 is that the present invention is punctured and inserted the handling process schematic diagram of orientation one embodiment in enhancing system by specific waveforms ultrasound image data identification puncture needle;
Figure 12 is the refinement high-level schematic functional block diagram of puncture needle identification module in Fig. 1;
Figure 13 is the coordinate transform schematic diagram of Hough transformation process;
Figure 14 is that the present invention punctures the schematic flow sheet of Enhancement Method one embodiment;
Figure 15 is the refinement schematic flow sheet of step S20 in Figure 14.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As everyone knows, when carrying out ultra sonic imaging under conventional B ultrasonic pattern, smooth surface due to puncture needle can cause the direct reflection of needle body, thus cause the ultrasonic echo of body sections too faint, thus make the display visibility of puncture needle in ultrasonoscopy too low and be unfavorable for that doctor carries out puncture procedure with reference to ultrasonoscopy.Thus need to strengthen the display effect of puncture needle in ultrasonoscopy to improve the visibility of puncture needle.
The invention provides a kind of puncture enhancing system.
With reference to the high-level schematic functional block diagram that Fig. 1, Fig. 1 are puncture enhancing system one embodiment.
In the present embodiment, puncture enhancing system comprises some ultrasonic probes 10, puncture needle 20, display 30, described ultrasonic probe 10 is for transmitting and receiving ultrasound wave, described display 30 is for showing ultrasonic scanning output image, and puncture as shown in Figure 2 strengthens the application scenarios schematic diagram of system one embodiment.In the present embodiment, the type of ultrasonic probe 10 and quantity are not limited, specifically arranges according to actual needs.Puncture needle 20 is specially and uses identical linear type puncture needle in real puncture procedure.In addition, in the present embodiment, vibrational power flow and the purposes of ultrasonic probe 10, puncture needle 20, display 30 are all same as the prior art, therefore do not do and too much repeat.Wherein, ultrasonic probe 10 is general is rearranged at equal intervals by the strip piezoelectric transducer (every single piezoelectric transducer is called array element) that some sizes are identical or each array element is arranged in two-dimensional matrix shape.
Need in addition to further illustrate, in the present embodiment, large deflection angle, large deflection image and large deflection angle degree are all the professional term in puncture enhancement techniques, and its concrete meaning is same as the prior art, does not therefore also do too much repeating.
Fig. 3 is the basic handling schematic flow sheet of ultra sonic imaging in prior art.
The basic handling flow process of ultra sonic imaging comprises successively: probe launch ultrasound wave, reception and resolve echo data, image pre-treatment, image buffer storage, post processing of image and display etc. five greatly processing stage.Wherein, the basic functional principle of ultra sonic imaging is:
1. the piezoelectric transducer in ultrasonic probe converts the potential pulse be applied to above it excitation to mechanical vibration, thus externally launches ultrasound wave, and wherein, if carry out puncture to strengthen display, then ultrasonic probe also can increase transmitting large deflection angle ultrasound wave;
2. ultrasound wave is propagated (such as human body) in medium, can produce reflection and scattering wave, after probe receives echo, vibrational energy is transformed into the signal of telecommunication, and after modulus process, generates corresponding view data and resolve it;
3. the view data parsed carries out buffer memory after the image pre-treatment operations such as space compound, and wherein, if carry out puncture to strengthen display, then the view data parsed also will comprise large deflection image;
4. the intermediate data result cache of process is got off in data buffer area, regulates to facilitate inspection and parameter.
5. the view data after buffer memory is finally shown in above display screen after the operation of the post processing of image such as gain, dynamic range transform, wherein, if carry out puncture to strengthen display, then post processing of image operation also needs the fusion treatment of space compound image and large deflection image being carried out puncture needle region to show puncture needle image to strengthen.
The basic handling flow process of the ultra sonic imaging corresponding to the present embodiment is substantially identical with prior art with principle, wherein, the present embodiment and the maximum difference of existing puncture enhancement techniques are: need in existing puncture enhancement techniques judge the large deflection angle degree of ultrasonic probe by user and manually regulate, the judgement to the large deflection angle degree of ultrasonic probe and adjustment is then automatically completed in the present embodiment, thus remain the optimal display result that puncture strengthens, realize especially by the puncture intensifier 40 punctured in the present embodiment included by enhancing system.
Wherein, described puncture intensifier 40 comprises further:
Increase transmitter module 401, for when described in epicycle, ultrasonic probe transmitting large deflection angle ultrasound wave carries out scanning to strengthen display puncture needle image, the specific waveforms ultrasound wave launching some different emission angles scans;
Puncture needle identification module 402, for the scanogram frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, identifies the insertion orientation of described puncture needle;
Large deflection angle adjusting module 403, for large deflection angle degree corresponding during ultrasonic probe transmitting large deflection angle ultrasound wave according to the insertion orientation adjustment next round of identified described puncture needle, wherein, under described large deflection angle degree, hyperacoustic transmit direction or near normal vertical with the insertion orientation of identified described puncture needle.
In the present embodiment, ultrasonic probe 10 is all periodically launch large deflection angle ultrasound wave, the concrete setting of wherein launching the cycle is not limit, and for the judgement of the large deflection angle degree how automatically completed next cycle ultrasonic probe 10, the principle that realizes of the present embodiment (it should be noted that specifically by first catching and identifying the insertion orientation that current puncture needle 20 carries out in puncture procedure process, image is strengthened for showing puncture more in real time, hyperacoustic transmitting cycle duration can be shortened further), and then again according to the relation that transmit direction hyperacoustic under large deflection angle degree is vertical with the insertion orientation of identified puncture needle 20, the large deflection angle degree of next cycle ultrasonic probe 10 of anti-release.
The large deflection image of a frame generally can be increased, as shown in Figure 4 under existing puncture enhancement mode.In the present embodiment, when ultrasonic probe described in epicycle 10 launches large deflection angle ultrasound wave to strengthen display puncture needle 20 image, increase and launch by increasing transmitter module 401 the specific waveforms ultrasound wave of some different emission angles to identify puncture needle insertion orientation for puncture needle identification module 402, as shown in Figure 5, it should be noted that, recognition method and specific waveforms point hyperacoustic launch time that puncture needle 20 inserts orientation is not limited in the present embodiment, such as launch again after ultrasonic probe 10 launches large deflection angle ultrasound wave, or launch with large deflection angle ultrasound wave simultaneously, in addition, launching the hyperacoustic ultrasonic probe of specific waveforms can be identical with the hyperacoustic ultrasonic probe of transmitting large deflection angle, also can be different, specifically arrange according to practical situation.
Further alternative, puncture in enhancing system one embodiment in the present invention, it is the plane wave of plane or the broad beam of almost plane that described specific waveforms ultrasound wave at least comprises transmitting sound field corrugated within the scope of ultrasonic listening, wherein, broad beam specifically refers to that launching sound field wave beam within the scope of ultrasonic listening shrinks wave beam that is limited and that obviously do not focus on.
In addition, in the present embodiment, by large deflection angle adjusting module 403, ensure that to take turns at each and after image processing process completes, all automatically to adjust large deflection angle degree corresponding when next round ultrasonic probe 10 launches large deflection angle ultrasound wave, thus further ensure the Continuous optimization that puncture needle 20 strengthens display, and the hyperacoustic emission angle of large deflection angle launched under existing routine puncture enhancement mode is fixed, thus cannot ensure that ultrasonic emitting direction is vertical with the insertion orientation of puncture needle needle body, thus strengthen display effect poor.
In the present embodiment, because the initial insertion orientation of puncture needle 20 is (also namely just carry out selected by puncturing operation Shi doctor insertion angle) that can be determined by user self, therefore, ultrasonic probe 10 for the first round is launched corresponding large deflection angle degree when deflecting greatly ultrasound wave and also can be determined by user self equally, and it is follow-up, because puncture needle 20 has entered tissue inside, therefore, need by the image reference adjustment puncture angle of ultrasonic imaging as puncture procedure, wherein, some histoorgan in human body can be avoided by the insertion orientation adjusting puncture needle, and the insertion orientation adjusting puncture needle needs with reference to the hyperacoustic image of next round, now, by puncture intensifier 40 before the large deflection angle ultrasound wave of actual transmission next round, increase the specific waveforms ultrasound wave launching some different emission angles, thus catch in advance and recognize the insertion orientation of current puncture needle 20, and then the hyperacoustic emission angle can determining corresponding to or approximately perpendicular direction vertical with the insertion orientation of current puncture needle 20 is large deflection angle degree corresponding when next round ultrasonic probe 10 launches large deflection angle ultrasound wave.
Wherein, what needs further illustrated is, the transmitting deflection angle that hyperacoustic transmit direction is specifically supported by ultrasonic system equipment reality with the insertion orientation near normal of the puncture needle identified is determined, if hyperacoustic transmit direction can be vertical with the insertion orientation of puncture needle, then be adjusted to the direction vertical with the insertion orientation of puncture needle, if and can not, be then adjusted to the approximately perpendicular direction with insertion orientation the best of puncture needle.
In the present embodiment, when epicycle ultrasonic probe 10 launches large deflection angle ultrasound wave to strengthen display puncture needle 20 image, by increasing the specific waveforms ultrasound wave launching some different emission angles, thus the easy identification completing insertion orientation to puncture needle 20 fast, and then without the need to the insertion angle direction of fixing puncture needle 20, improve the flexibility ratio that doctor carries out puncturing operation operation.Simultaneously, according to the insertion orientation vertical relation of hyperacoustic transmit direction under the insertion orientation of identified puncture needle 20 and large deflection angle degree with the puncture needle 20 identified, realize large deflection angle degree corresponding when automatically adjustment next round ultrasonic probe 10 launches large deflection angle ultrasound wave, thus reduce the complexity that puncture strengthens manipulation, and the ultrasonoscopy corresponding to puncture needle 10 is made to remain best enhancing display effect.
Be the refinement high-level schematic functional block diagram of intensifier one embodiment of puncturing in Fig. 1 with reference to Fig. 6, Fig. 6.Based on above-described embodiment, in the present embodiment, described puncture intensifier 40 further comprises:
Picture frame generation module 404, for generating picture frame corresponding to described specific waveforms ultrasound wave and when generating the picture frame corresponding to described specific waveforms ultrasound wave, whole ultrasonic scanning lines of disposable this picture frame of generation.
Need during existing B ultrasonic mode imaging to launch repeated ultrasonic ripple to form the overlap of ultrasonic emitting line, as shown in Figure 7, and then can add up when composite wave bunch, as shown in Figure 8, to reach the scanning line that can strengthen this picture frame of display when generating the picture frame corresponding to ultrasound wave, also namely make scanogram more clear.
In the present embodiment, due to each specific waveforms ultrasound wave (as plane wave) for be that the puncture needle 20 of special angle detects, therefore the specific waveforms ultrasonic scanning of each angle only needs the part array element on ultrasonic probe 10 to launch ultrasound wave, and only need to launch once, and without the need to needing overlapping transmission as during conventional B ultrasonic mode imaging, thus considerably reduce transmitting hyperacoustic time, improve image processing speed.Also namely as shown in Figure 9, in the present embodiment, described increase transmitter module 401, when launching described specific waveforms ultrasound wave (as plane wave) and scanning, only launches once described specific waveforms ultrasound wave under same emission angle.
In addition, after ultrasonic emitting, tissue and puncture needle 20 ultrasonic scatterer or can be reflected back ultrasonic probe 10, by each array element on ultrasonic probe 10, echo data is converted to the signal of telecommunication again, be converted to digital signal again through amplification carry out processing and resolve, thus obtain the echo data of every bar line of departure of synthetic image frame.Wherein, in the present embodiment, by picture frame generation module 404 when composite wave bunch is to generate the picture frame corresponding to described specific waveforms ultrasound wave each time, whole scanning lines of disposable this picture frame of generation, also namely without the need to adding up as needing when composite wave bunch under normal B-mode, as shown in Figure 10.
What needs further illustrated is, in the present embodiment, large deflection angle degree corresponding when launching specific waveforms ultrasound wave only for determining that next round launches large deflection angle ultrasound wave, therefore, only need ensure processing speed when identifying puncture needle insertion orientation, and require without the need to doing excessive demand for the definition launching the scanogram that specific waveforms ultrasound wave is formed, shown by the enhancing display of the puncture needle scanogram specifically corresponding to large deflection angle ultrasound wave out.
In the present embodiment, owing to needing to catch in advance and identifying the insertion orientation in puncture needle 20 piercing process, therefore, need to ensure ultrasonic scanning and image processing speed, thus rapid adjustment next round can launch large deflection angle degree corresponding to large deflection angle image, to improve the real-time that puncture strengthens display.Namely all scanning lines needed for complete image are synthesized especially by primary emission specific waveforms ultrasound wave (as plane wave), thus drastically increase the processing speed of ultrasonoscopy, and then the rapid scanning to puncture needle 20 under different emission angle can be realized.
Further alternative, puncture in enhancing system one embodiment in the present invention, based on above-described embodiment, in the present embodiment, described puncture needle identification module 402 specifically for:
According to the image frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, carry out puncture check processing respectively to identify the insertion orientation of described puncture needle 20, wherein, using the insertion orientation of the insertion orientation of described puncture needle 20 the highest for identification probability corresponding under different emission angle as real described puncture needle 20.
In the present embodiment, image buffer storage processing stage, the picture frame corresponding to specific waveforms ultrasound wave increasing multiple angles of transmitting in the space compound picture frame of conventional B mode image, large deflection image frame and the present invention is included in image buffer storage, but in the gain in the post processing of image stage of ultra sonic imaging handling process and dynamic range transform, only the picture frame of space compound and large deflector is processed, and the picture frame determined corresponding to ultrasonic waveform is not processed, as shown in figure 11.
After completing gain and dynamic range transform process, take out the hyperacoustic view data of specific waveforms, enter puncture detecting step, carry out respectively puncturing in the specific waveforms ultrasonogram picture frame of multiple different angles detecting by puncture needle identification module 402 and determine the insertion orientation of puncture needle to identify, the insertion orientation of the puncture needle 20 that identification probability corresponding under the most different emission angle is the highest is as the insertion orientation of real puncture needle 20.
In addition, also can further by the orientation parameter exporting puncture needle, and then make related hardware can adjust the large deflection angle degree of ultrasonic probe 10 before next round launches large deflection angle ultrasound wave by large deflection angle adjusting module 403, thus make the hyperacoustic transmit direction of large deflection angle vertical with the orientation of the puncture needle 20 calculated or strengthen display effect with the best obtaining puncture needle 20 close to vertical as much as possible.In addition, for ease of user's reference, the deflection indication wire of ultrasonic probe 10 can also be drawn out further when showing next frame ultrasonoscopy.
After completing the process to the hyperacoustic view data of specific waveforms, need this large deflection angle view data of taking turns of taking out institute's buffer memory in image buffer storage, and enter the needle body identification step of puncture needle.Wherein, needle body identification step is consistent with the algorithm core of puncture detecting step, from large deflection angle view data, also namely find out the needle body place straight line parameter of puncture needle.Finally, then take out the picture frame after Conventional spatial compound, in the needle body place straight line obtain the picture frame of itself and large deflection angle in needle body identification step and near zone, carry out natural fusion.
In addition, when after the straight line parameter of acquisition needle body place, within the scope of this straight line certain radius, respectively give certain weight to the respective pixel of large deflection image and Conventional spatial combination picture, and superpose in this radius region.Thus ensure large deflection image and the natural fusion of Conventional spatial combination picture on whole ultrasonoscopy.Simultaneously in order to ensure the continuity of image when real-time continuous shows, also can give certain weight by the reinforced effects of current whole ultrasonic image frame and do on average with the weight of upper one whole ultrasonic image frame, thus make the display of continuous print whole ultrasonoscopy smoothly and not loftier, promote the display effect of image.
With reference to the refinement high-level schematic functional block diagram that Figure 12, Figure 12 are puncture needle identification module in Fig. 1.Based on above-described embodiment, in the present embodiment, described puncture needle identification module 402 at least comprises:
Binary conversion treatment unit 4021, for image frame data described under different emission angle is carried out binary conversion treatment respectively, so that determine may for the collection of pixels of described puncture needle in described image frame data corresponding under different emission angle;
In the present embodiment, by launching the ultrasound wave of multiple different angles, the probability capturing the sound wave that puncture needle 20 returns can be improved.Due in the pixel of the hyperacoustic view data of specific waveforms, pixel region shared by puncture needle 20 is very little, therefore, the scope detected for shortening puncture improves with corresponding the speed puncturing and detect, in the present embodiment, by binary conversion treatment unit 4021 so that the hyperacoustic view data of specific waveforms under different emission angle is carried out binary conversion treatment respectively, so that determine may for the collection of pixels of puncture needle 20 in view data corresponding under different emission angle, wherein, collection of pixels corresponding to some somas also may may be included for the collection of pixels of puncture needle 20, therefore, need further to identifying for the collection of pixels of puncture needle 20.
Hough transformation processing unit 4022, for described collection of pixels corresponding under different emission angle is carried out Hough transformation process respectively, with described puncture needle needle body place straight line parameter under determining coordinate system corresponding to Hough transformation;
In the present embodiment, especially by Hough transformation processing unit 4022 so that Hough transformation process may be carried out respectively for the collection of pixels of puncture needle 20 by corresponding under different emission angle, to determine puncture needle 20 needle body place straight line parameter under coordinate system corresponding to Hough transformation.
In the present embodiment, it is all adopt Hough transformation process that puncture detects with the core of needle body identification.Wherein, Hough transformation (HoughTransform) be in image procossing from image one of basic skills identifying geometry, be mainly used to from image, isolate the geometry (as straight line, circle etc.) with certain same characteristic features, the most basic existing Hough transformation is exactly detection of straight lines (or line segment) from black white image.
Consider that existing puncture needle 20 is generally all form of straight lines, therefore by the parameter under conventional linear coordinate being mapped as correspondingly the parameter under polar coordinate.Straight line under each rectilinear coordinates system uniquely can be determined to the polar angle theta of vertical line to the distance rho of straight line and x-axis by initial point, therefore can by conventional linear parameter (k, b) new parameter group (rho, theta) is converted into, as shown in figure 13.And if there is straight line in image, the quantity for certain parameter group be there will be one statistics maximum.Therefore can be the process that statistics has the parameter group of maximum by the process shift of detection of straight lines.
Output unit 4023, for the relevant parameter according to described puncture needle needle body, the identification probability of described puncture needle needle body place straight line parameter under calculating different emission angle, and export the highest described puncture needle needle body place straight line parameter of identification probability, wherein, the insertion orientation of described puncture needle can be determined according to described puncture needle needle body place straight line parameter.
In the present embodiment, for obtaining result (in fact puncture needle needle body place straight line parameter can only be) more accurately, therefore, need to do a series of screening to all possible positions of puncture needle 20 needle body found after Hough transformation further to judge, especially by the relevant parameter of output unit 4023 according to puncture needle 20 needle body, the length of such as needle body, other characteristic parameters such as width and linear type, or some prioris in common image processing, get rid of the location parameter of some mistakes in all possible positions, and to not having the location parameter of obvious problem (also namely different emission angle under described puncture needle needle body place straight line parameter) to set the probability that is actual position, and export identification probability the highest puncture needle 20 needle body place straight line parameter by output unit 4023, wherein, can the corresponding insertion orientation determining puncture needle 20 according to puncture needle 20 needle body place straight line parameter.
Further, based on the one puncture enhancing system that the invention described above provides, the present invention also provides a kind of puncture Enhancement Method.
The basic handling schematic flow sheet of ultra sonic imaging as shown in Figure 3.The basic handling flow process of ultra sonic imaging comprises successively: probe launch ultrasound wave, reception and resolve echo data, image pre-treatment, image buffer storage, post processing of image and display etc. five greatly processing stage.Wherein, the basic functional principle of ultra sonic imaging is:
1. the piezoelectric transducer in ultrasonic probe converts the potential pulse be applied to above it excitation to mechanical vibration, thus externally launches ultrasound wave, and wherein, if carry out puncture to strengthen display, then ultrasonic probe also can increase transmitting large deflection angle ultrasound wave;
2. ultrasound wave is propagated (such as human body) in medium, can produce reflection and scattering wave, after probe receives echo, vibrational energy is transformed into the signal of telecommunication, and after modulus process, generates corresponding view data and resolve it;
3. the view data parsed carries out buffer memory after the image pre-treatment operations such as space compound, and wherein, if carry out puncture to strengthen display, then the view data parsed also will comprise large deflection image;
4. the intermediate data result cache of process is got off in data buffer area, regulates to facilitate inspection and parameter.
5. the view data after buffer memory is finally shown in above display screen after the operation of the post processing of image such as gain, dynamic range transform, wherein, if carry out puncture to strengthen display, then post processing of image operation also needs the fusion treatment of space compound image and large deflection image being carried out puncture needle region to show puncture needle image to strengthen.
The basic handling flow process of the ultra sonic imaging corresponding to the present embodiment is substantially identical with prior art with principle, wherein, the present embodiment and the maximum difference of existing puncture enhancement techniques are: need in existing puncture enhancement techniques judge the large deflection angle degree of ultrasonic probe by user and manually regulate, the judgement to the large deflection angle degree of ultrasonic probe and adjustment is then automatically completed in the present embodiment, thus remain the optimal display result that puncture strengthens, the puncture intensifier 40 punctured included by enhancing system especially by the present invention realizes, the schematic flow sheet of concrete Enhancement Method one embodiment that punctures with reference to the present invention shown in Figure 14, comprise:
Step S10, when epicycle ultrasonic probe transmitting large deflection angle ultrasound wave carries out scanning to strengthen display puncture needle image, the specific waveforms ultrasound wave launching some different emission angles scans;
Step S20, according to the scanogram frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, identifies the insertion orientation of puncture needle;
Step S30, large deflection angle degree corresponding when launching large deflection angle ultrasound wave according to the insertion orientation of identified puncture needle adjustment next round ultrasonic probe, wherein, under described large deflection angle degree, hyperacoustic transmit direction or near normal vertical with the insertion orientation of identified puncture needle.
In the present embodiment, ultrasonic probe 10 is all periodically launch large deflection angle ultrasound wave, the concrete setting of wherein launching the cycle is not limit, and for the judgement of the large deflection angle degree how automatically completed next cycle ultrasonic probe 10, the principle that realizes of the present embodiment (it should be noted that specifically by first catching and identifying the insertion orientation that current puncture needle 20 carries out in puncture procedure process, image is strengthened for showing puncture more in real time, hyperacoustic transmitting cycle duration can be shortened further), and then again according to the relation that transmit direction hyperacoustic under large deflection angle degree is vertical with the insertion orientation of identified puncture needle 20, the large deflection angle degree of next cycle ultrasonic probe 10 of anti-release.
The large deflection image of a frame generally can be increased, as shown in Figure 4 under existing puncture enhancement mode.In the present embodiment, when ultrasonic probe described in epicycle 10 launches large deflection angle ultrasound wave to strengthen display puncture needle 20 image, increase and launch by increasing transmitter module 401 the specific waveforms ultrasound wave of some different emission angles to identify puncture needle insertion orientation for puncture needle identification module 402, as shown in Figure 5, it should be noted that, specific waveforms point hyperacoustic launch time is not limited in the present embodiment, such as launch again after ultrasonic probe 10 launches large deflection angle ultrasound wave, or launch with large deflection angle ultrasound wave simultaneously, in addition, launching the hyperacoustic ultrasonic probe of specific waveforms can be identical with the hyperacoustic ultrasonic probe of transmitting large deflection angle, also can be different, specifically arrange according to practical situation.
Further alternative, puncture in Enhancement Method one embodiment in the present invention, it is the plane wave of plane or the broad beam of almost plane that described specific waveforms ultrasound wave at least comprises transmitting sound field corrugated within the scope of ultrasonic listening, wherein, broad beam specifically refers to that launching sound field wave beam within the scope of ultrasonic listening shrinks wave beam that is limited and that obviously do not focus on.
In addition, in the present embodiment, by large deflection angle adjusting module 403, ensure that to take turns at each and after image processing process completes, all automatically to adjust large deflection angle degree corresponding when next round ultrasonic probe 10 launches large deflection angle ultrasound wave, thus further ensure the Continuous optimization that puncture needle 20 strengthens display, and the hyperacoustic emission angle of large deflection angle launched under existing routine puncture enhancement mode is fixed, thus cannot ensure that ultrasonic emitting direction is vertical with the insertion orientation of puncture needle needle body, thus strengthen display effect poor.
In the present embodiment, because the initial insertion orientation of puncture needle 20 is (also namely just carry out selected by puncturing operation Shi doctor insertion angle) that can be determined by user self, therefore, ultrasonic probe 10 for the first round is launched corresponding large deflection angle degree when deflecting greatly ultrasound wave and also can be determined by user self equally, and it is follow-up, because puncture needle 20 has entered tissue inside, therefore, need by the image reference adjustment puncture angle of ultrasonic imaging as puncture procedure, wherein, some histoorgan in human body can be avoided by the insertion orientation adjusting puncture needle, and the insertion orientation adjusting puncture needle needs with reference to the hyperacoustic image of next round, now, by puncture intensifier 40 before the large deflection angle ultrasound wave of actual transmission next round, increase the specific waveforms ultrasound wave launching some different emission angles, thus catch in advance and recognize the insertion orientation of current puncture needle 20, and then the hyperacoustic emission angle can determining corresponding to the direction vertical with the insertion orientation of current puncture needle 20 is large deflection angle degree corresponding when next round ultrasonic probe 10 launches large deflection angle ultrasound wave.
In the present embodiment, when epicycle ultrasonic probe 10 launches large deflection angle ultrasound wave to strengthen display puncture needle 20 image, by increasing the specific waveforms ultrasound wave launching some different emission angles, thus the easy identification completing insertion orientation to puncture needle 20 fast, and then without the need to the insertion angle direction of fixing puncture needle 20, improve the flexibility ratio that doctor carries out puncturing operation operation.Simultaneously, according to the insertion orientation vertical relation of hyperacoustic transmit direction under the insertion orientation of identified puncture needle 20 and large deflection angle degree with the puncture needle 20 identified, realize large deflection angle degree corresponding when automatically adjustment next round ultrasonic probe 10 launches large deflection angle ultrasound wave, thus reduce the complexity that puncture strengthens manipulation, and the ultrasonoscopy corresponding to puncture needle 10 is made to remain best enhancing display effect.
Further alternative, puncture in Enhancement Method one embodiment in the present invention, when launching described specific waveforms ultrasound wave and scanning, described specific waveforms ultrasound wave is only launched once under same emission angle, wherein, when generating the picture frame corresponding to described specific waveforms ultrasound wave, whole ultrasonic scanning lines of disposable this picture frame of generation.
Need during existing B ultrasonic mode imaging to launch repeated ultrasonic ripple to form the overlap of ultrasonic emitting line, as shown in Figure 7, and then can add up when composite wave bunch, as shown in Figure 8, to reach the scanning line that can strengthen this picture frame of display when generating the picture frame corresponding to ultrasound wave, also namely make scanogram more clear.
In the present embodiment, due to each specific waveforms ultrasound wave (as plane wave) for be that the puncture needle 20 of special angle detects, therefore the specific waveforms ultrasonic scanning of each angle only needs the part array element on ultrasonic probe 10 to launch ultrasound wave, and only need to launch once, and without the need to needing overlapping transmission as during conventional B ultrasonic mode imaging, thus considerably reduce transmitting hyperacoustic time, improve image processing speed.Also namely as shown in Figure 9, in the present embodiment, described increase transmitter module 401, when launching described specific waveforms ultrasound wave (as plane wave) and scanning, only launches once described specific waveforms ultrasound wave under same emission angle.
In addition, after ultrasonic emitting, tissue and puncture needle 20 ultrasonic scatterer or can be reflected back ultrasonic probe 10, by each array element on ultrasonic probe 10, echo data is converted to the signal of telecommunication again, be converted to digital signal again through amplification carry out processing and resolve, thus obtain the echo data of every bar line of departure of synthetic image frame.Wherein, in the present embodiment, by picture frame generation module 404 when composite wave bunch is to generate the picture frame corresponding to described specific waveforms ultrasound wave each time, whole scanning lines of disposable this picture frame of generation, also namely without the need to adding up as needing when composite wave bunch under normal B-mode, as shown in Figure 10.
In the present embodiment, owing to needing to catch in advance and identifying the insertion orientation in puncture needle 20 piercing process, therefore, need to ensure ultrasonic scanning and image processing speed, thus rapid adjustment next round can launch large deflection angle degree corresponding to large deflection angle image, to improve the real-time that puncture strengthens display.Namely all scanning lines needed for complete image are synthesized especially by primary emission specific waveforms ultrasound wave (as plane wave), thus drastically increase the processing speed of ultrasonoscopy, and then the rapid scanning to puncture needle 20 under different emission angle can be realized.
Further alternative, puncture in Enhancement Method one embodiment in the present invention, based on above-described embodiment, in the present embodiment, above-mentioned steps S20 specifically comprises:
According to the image frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, carry out puncture check processing respectively to identify the insertion orientation of puncture needle, wherein, using the insertion orientation of the insertion orientation of puncture needle the highest for identification probability corresponding under different emission angle as real puncture needle.
In the present embodiment, image buffer storage processing stage, the picture frame corresponding to specific waveforms ultrasound wave increasing multiple angles of transmitting in the space compound picture frame of conventional B mode image, large deflection image frame and the present invention is included in image buffer storage, but in the gain in the post processing of image stage of ultra sonic imaging handling process and dynamic range transform, only the picture frame of space compound and large deflector is processed, and the picture frame corresponding to specific waveforms ultrasound wave is not processed, as shown in figure 12.
After completing gain and dynamic range transform process, take out the hyperacoustic view data of specific waveforms, enter puncture detecting step, carry out respectively puncturing in the specific waveforms ultrasonogram picture frame of multiple different angles detecting by puncture needle identification module 402 and determine the insertion orientation of puncture needle to identify, the insertion orientation of the puncture needle 20 that identification probability corresponding under the most different emission angle is the highest is as the insertion orientation of real puncture needle 20.
In addition, also can further by the orientation parameter exporting puncture needle, and then make related hardware can adjust the large deflection angle degree of ultrasonic probe 10 before next round launches large deflection angle ultrasound wave by large deflection angle adjusting module 403, thus make that the hyperacoustic transmit direction of large deflection angle is vertical with the orientation of the puncture needle 20 calculated or vertical as much as possible strengthens display effect with the best obtaining puncture needle 20.In addition, for ease of user's reference, the deflection indication wire of ultrasonic probe 10 can also be drawn out further when showing next frame ultrasonoscopy.
After completing the process to the hyperacoustic view data of specific waveforms, need this large deflection angle view data of taking turns of taking out institute's buffer memory in image buffer storage, and enter the needle body identification step of puncture needle.Wherein, needle body identification step is consistent with the algorithm core of puncture detecting step, from large deflection angle view data, also namely find out the needle body place straight line parameter of puncture needle.Finally, then take out the picture frame after Conventional spatial compound, in the needle body place straight line obtain the picture frame of itself and large deflection angle in needle body identification step and near zone, carry out natural fusion.
In addition, when after the straight line parameter of acquisition needle body place, within the scope of this straight line certain radius, respectively give certain weight to the respective pixel of large deflection image and Conventional spatial combination picture, and superpose in this radius region.Thus ensure large deflection image and the natural fusion of Conventional spatial combination picture on whole ultrasonoscopy.Simultaneously in order to ensure the continuity of image when real-time continuous shows, also can give certain weight by the reinforced effects of current whole ultrasonic image frame and do on average with the weight of upper one whole ultrasonic image frame, thus make the display of continuous print whole ultrasonoscopy smoothly and not loftier, promote the display effect of image.
With reference to the refinement schematic flow sheet that Figure 15, Figure 15 are step S20 in Figure 14.Based on above-described embodiment, in the present embodiment, above-mentioned steps S20 comprises:
Step S201, carries out binary conversion treatment respectively by image frame data described under different emission angle, so that determine may for the collection of pixels of puncture needle in described image frame data corresponding under different emission angle;
In the present embodiment, by launching the ultrasound wave of multiple different angles, the probability capturing the sound wave that puncture needle 20 returns can be improved.Due in the pixel of the hyperacoustic view data of specific waveforms, pixel region shared by puncture needle 20 is very little, therefore, the scope detected for shortening puncture improves with corresponding the speed puncturing and detect, in the present embodiment, by binary conversion treatment unit 4021 so that the hyperacoustic view data of specific waveforms under different emission angle is carried out binary conversion treatment respectively, so that determine may for the collection of pixels of puncture needle 20 in view data corresponding under different emission angle, wherein, collection of pixels corresponding to some somas also may may be included for the collection of pixels of puncture needle 20, therefore, need further to identifying for the collection of pixels of puncture needle 20.
Step S202, carries out Hough transformation process respectively by described collection of pixels corresponding under different emission angle, to determine puncture needle needle body place straight line parameter under coordinate system corresponding to Hough transformation;
In the present embodiment, especially by Hough transformation processing unit 4022 so that Hough transformation process may be carried out respectively for the collection of pixels of puncture needle 20 by corresponding under different emission angle, to determine puncture needle 20 needle body place straight line parameter under coordinate system corresponding to Hough transformation.
In the present embodiment, it is all adopt Hough transformation process that puncture detects with the core of needle body identification.Wherein, Hough transformation (HoughTransform) be in image procossing from image one of basic skills identifying geometry, be mainly used to from image, isolate the geometry (as straight line, circle etc.) with certain same characteristic features, the most basic existing Hough transformation is exactly detection of straight lines (or line segment) from black white image.
Consider that existing puncture needle 20 is generally all form of straight lines, therefore by the parameter under conventional linear coordinate being mapped as correspondingly the parameter under polar coordinate.Straight line under each rectilinear coordinates system uniquely can be determined to the polar angle theta of vertical line to the distance rho of straight line and x-axis by initial point, therefore can by conventional linear parameter (k, b) new parameter group (rho, theta) is converted into, as shown in figure 13.And if there is straight line in image, the quantity for certain parameter group be there will be one statistics maximum.Therefore can be the process that statistics has the parameter group of maximum by the process shift of detection of straight lines.
Step S203, according to the relevant parameter of puncture needle needle body, set the identification probability of puncture needle needle body place straight line parameter under different emission angle, and export the highest puncture needle needle body place straight line parameter of identification probability, wherein, can determine that puncture needle inserts orientation according to puncture needle needle body place straight line parameter.
In the present embodiment, for obtaining result (in fact puncture needle needle body place straight line parameter can only be) more accurately, therefore, need to do a series of screening to all possible positions of puncture needle 20 needle body found after Hough transformation further to judge, especially by the relevant parameter of output unit 4023 according to puncture needle 20 needle body, the length of such as needle body, other characteristic parameters such as width and linear type, or some prioris in common image processing, discharge the location parameter of some mistakes in all possible positions, and to not having the location parameter of obvious problem (also namely different emission angle under described puncture needle needle body place straight line parameter) to set the probability that is actual position, and export identification probability the highest puncture needle 20 needle body place straight line parameter by output unit 4023, wherein, can the corresponding insertion orientation determining puncture needle 20 according to puncture needle 20 needle body place straight line parameter.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. puncture an Enhancement Method, and it is characterized in that, described puncture Enhancement Method comprises:
When epicycle ultrasonic probe transmitting large deflection angle ultrasound wave carries out scanning to strengthen display puncture needle image, the specific waveforms ultrasound wave launching some different emission angles scans;
According to the scanogram frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, identify the insertion orientation of puncture needle;
Large deflection angle degree corresponding when launching large deflection angle ultrasound wave according to the insertion orientation of identified puncture needle adjustment next round ultrasonic probe, wherein, under described large deflection angle degree, hyperacoustic transmit direction or near normal vertical with the insertion orientation of identified puncture needle.
2. puncture Enhancement Method as claimed in claim 1, it is characterized in that, it is the plane wave of plane or the broad beam of almost plane that described specific waveforms ultrasound wave at least comprises transmitting sound field corrugated within the scope of ultrasonic listening.
3. puncture Enhancement Method as claimed in claim 2, it is characterized in that, when launching described specific waveforms ultrasound wave and scanning, described specific waveforms ultrasound wave is only launched once under same emission angle, wherein, when generating the picture frame corresponding to described specific waveforms ultrasound wave, whole ultrasonic scanning lines of disposable this picture frame of generation.
4. the puncture Enhancement Method according to any one of claim 1-3, is characterized in that, described scanogram frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, identifies that the insertion orientation of puncture needle comprises:
According to the image frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, carry out puncture check processing respectively to identify the insertion orientation of puncture needle, wherein, using the insertion orientation of the insertion orientation of puncture needle the highest for identification probability corresponding under different emission angle as real puncture needle.
5. puncture Enhancement Method as claimed in claim 4, it is characterized in that, described puncture check processing at least comprises:
Image frame data described under different emission angle is carried out binary conversion treatment respectively, so that determine may for the collection of pixels of puncture needle in described image frame data corresponding under different emission angle;
Described collection of pixels corresponding under different emission angle is carried out Hough transformation process respectively, to determine puncture needle needle body place straight line parameter under coordinate system corresponding to Hough transformation;
According to the relevant parameter of puncture needle needle body, calculate the identification probability of puncture needle needle body place straight line parameter under different emission angle, and export the highest puncture needle needle body place straight line parameter of identification probability, wherein, can determine that puncture needle inserts orientation according to puncture needle needle body place straight line parameter.
6. a puncture enhancing system, comprise some ultrasonic probes, puncture needle, display, described ultrasonic probe is for transmitting and receiving ultrasound wave, and described display is for showing ultrasonic scanning output image, it is characterized in that, described puncture enhancing system also comprises puncture intensifier; Wherein, described puncture intensifier comprises:
Increase transmitter module, for when described in epicycle, ultrasonic probe transmitting large deflection angle ultrasound wave carries out scanning to strengthen display puncture needle image, the specific waveforms ultrasound wave launching some different emission angles scans;
Puncture needle identification module, for the scanogram frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, identifies the insertion orientation of described puncture needle;
Large deflection angle adjusting module, for large deflection angle degree corresponding during ultrasonic probe transmitting large deflection angle ultrasound wave according to the insertion orientation adjustment next round of identified described puncture needle, wherein, under described large deflection angle degree, hyperacoustic transmit direction or near normal vertical with the insertion orientation of identified described puncture needle.
7. puncture enhancing system as claimed in claim 6, it is characterized in that, it is the plane wave of plane or the broad beam of almost plane that described specific waveforms ultrasound wave at least comprises transmitting sound field corrugated within the scope of ultrasonic listening.
8. puncture enhancing system as claimed in claim 7, it is characterized in that, described increase transmitter module, when launching described specific waveforms ultrasound wave and scanning, only launches once described specific waveforms ultrasound wave under same emission angle;
Described puncture intensifier also comprises:
Picture frame generation module, for generating picture frame corresponding to described specific waveforms ultrasound wave and when generating the picture frame corresponding to described specific waveforms ultrasound wave, whole ultrasonic scanning lines of disposable this picture frame of generation.
9. puncture according to any one of claim 6-8 strengthens system, it is characterized in that, described puncture needle identification module specifically for:
According to the image frame data corresponding to specific waveforms ultrasound wave described under some different emission angles, carry out puncture check processing respectively to identify the insertion orientation of described puncture needle, wherein, using the insertion orientation of the insertion orientation of described puncture needle the highest for identification probability corresponding under different emission angle as real described puncture needle.
10. puncture enhancing system as claimed in claim 9, it is characterized in that, described puncture needle identification module at least comprises:
Binary conversion treatment unit, for image frame data described under different emission angle is carried out binary conversion treatment respectively, so that determine may for the collection of pixels of described puncture needle in described image frame data corresponding under different emission angle;
Hough transformation processing unit, for described collection of pixels corresponding under different emission angle is carried out Hough transformation process respectively, with described puncture needle needle body place straight line parameter under determining coordinate system corresponding to Hough transformation;
Output unit, for the relevant parameter according to described puncture needle needle body, the identification probability of described puncture needle needle body place straight line parameter under calculating different emission angle, and export the highest described puncture needle needle body place straight line parameter of identification probability, wherein, the insertion orientation of described puncture needle can be determined according to described puncture needle needle body place straight line parameter.
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| CN105496515B (en) | 2018-07-17 |
| WO2017092454A1 (en) | 2017-06-08 |
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