An ultrasonic imaging system beamforming architecture comprises a fixed wideband preprocessor section followed by a reduced number of dynamically adjusted delay channels. The preprocessor includes a transform beamformer with spatial filtering followed by a delay beamformer. Each transform preprocessor...http://www.google.es/patents/US5477859?utm_source=gb-gplus-sharePatente US5477859 - Ultrasound imaging system having spatial filtering preprocessor
Ultrasound imaging system having spatial filtering preprocessor
