G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 7/52 (2006.01)
Patent
CA 2051653
2051653 9113369 PCTABS00007 An ultrasonic imaging system and method are shown which includes a transducer (10) for pulse insonification of an object (12) and for receiving echo signals from within the object. Echo signals are converted to electrical signals at the transducer (10) and the electrical signals are supplied to a signal processor (28). Processor (28) includes an envelope detector (38) and integrator (40) for integrating the detected output. Echo signals obtained from a first range zone (Z1) at the focal point (F) are processed by processor (28) and supplied to a hold circuit (50) to provide a reflection pixel signal value which is dependent upon reflectivity at the focal point. Echo signals obtained from a second range zone (Z2) opposite the focal point (F) also are processed by processor (28) and supplied to a hold circuit (52) to provide a transmission pixel signal value which is dependent upon attenuation of ultrasonic waves at the focal point (F). The reflection and transmission pixel signal values from hold circuits (50) and (52) are supplied as inputs to generator (60) for generation of combined image data for a combined image which is a function of both reflection and transmission image data. A combined image is displayed at display (64).
Green Philip S.
Ostrem John S.
Whitehurst Todd K.
Gowling Lafleur Henderson Llp
Sri International
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