G - Physics – 01 – N
Patent
G - Physics
01
N
349/36
G01N 29/00 (2006.01) A61B 10/00 (2006.01) G01S 7/52 (2006.01) G01S 15/00 (2006.01) G01S 15/87 (2006.01) G01S 15/89 (2006.01)
Patent
CA 1055596
ABSTRACT OF THE DISCLOSURE Combination Doppler and B-scan ultrasonic imaging apparatus is disclosed which includes visual display means for the simultaneous visual display of received ultrasonic Doppler and B-scan information. The apparatus includes first and second focused transducers associated with the Doppler and B-scan systems, which transducers are individually mounted for movement along parallel linear paths. The transducers each comprise a generally semi-cylindrical shaped body of piezoelectric material having opposite end faces upon which electrodes are disposed for connection to Doppler and B-scan transmitter and/or receiver units. The flat side walls of the piezoelectric bodies are positioned closely adjacent a mid-plane extending between the transducers, and means are provided for focusing the transducers at substantially the same depth for operation along a common focal region at, or adjacent, the mid-plane. One such focusing means includes acoustic lenses carried by the piezoelectric bodies. Another focusing means includes an electrode array for connection to the transmitter and/or receiver units through signal delay means. In yet another embodiment, the piezoelectric bodies are formed with curved end faces for focusing.
271035
Green Philip S.
LandOfFree
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