Ultrasonic diagnostic transducer assembly and system

Details Ultrasonic diagnostic transducer assembly and system Ultrasonic diagnostic transducer assembly and system

1979-03-02

1980-12-30

Michell, Robert W.

Measuring and testing

Vibration

By mechanical waves

128660, 367103, 367105, G01N 2900

Patent

active

042416116

ABSTRACT:
An ultrasonic transducer assembly and system including a disc-shaped transducer element surrounded by ring-shaped transducer elements of different width to permit dynamic focusing and minimum phase cancellation. The elements are switched so that the output signals for various depths have a small dynamic range whereby the dynamic range of associated amplifiers is significantly reduced.

REFERENCES:
patent: 4011750 (1977-03-01), Robinson
patent: 4012952 (1977-03-01), Dory
patent: 4084582 (1978-04-01), Nigam
patent: 4137777 (1979-02-01), Haverl et al.
patent: 4138895 (1979-02-01), Mezrich
Kossoff, G. et al., "Octoson: A New Rapid Multi-Tx General Purpose Water Coupling Echoscope," Proc. Zd Eur. Cong. on UTS in Med. Munich Ger. 1975, pp. 90-95.
Alais, P. et al., "Acoustic Imaging with an Electronically Focussed & Scanned Array," Ibid, pp. 75-82.
Burckhardt, C. B. et al., "A Real-Time B Scanner with Improved Lateral Resolution," Ibid pp. 81-89.

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