An ultrasonic transducer acquires a series of ultrasound tomograms as it continuously rotates through a range of angles. When positioned in a left ventricular long axis view, serial sectional slices are acquired within 6 seconds from which a 3D image is reconstructed. The boundary of the left ventricle...http://www.google.es/patents/US5871019?utm_source=gb-gplus-sharePatente US5871019 - Fast cardiac boundary imaging
