Ultrasonic scanner

Details Ultrasonic scanner Ultrasonic scanner

G - Physics

01

N

349/36

G01N 29/00 (2006.01) A61B 5/00 (2006.01) G10K 11/28 (2006.01) G10K 11/35 (2006.01)

Patent

CA 1121500

ABSTRACT OF THE DISCLOSURE An ultrasonic scanner for producing a sector scan in an object to be examined in which one or more ultrasonic transducers traverse an arcuate path with respect to a reflector which is positioned to receive the ultrasonic waves scanning the surface of the reflector from each of the transducers and coverge such waves at a point a preselected distance in front of the reflector. In general, the ultrasonic waves are converged at a point outside the scanner and inside the object to produce a sector scan in the object having its center at the convergence point, In one embodi- ment of the scanner the reflector only partially reflects the ultrasonic waves and an additional stationary transducer is pro- vided which is positioned to produce ultrasonic waves which radiate through the reflector and coincide with one of the lines of the sector scan, thus permitting simultaneous M-mode or pulse Doppler echo information to be obtained in perfect registration with the sector scan lines. Attenuation, absorbtion and anti- reflection means are provided to suppress echo artifacts.

311265

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