Ultrasonic measuring system

Details Ultrasonic measuring system Ultrasonic measuring system

1982-03-31

1984-07-17

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

73639, 128660, G01N 2900

Patent

active

044598530

ABSTRACT:
A probe is provided which comprises a plurality of ultrasonic transducer elements, and is so arranged as to be capable of simultaneously transmitting and receiving ultrasonic beams of plural frequencies. Means is provided for changing the shapes of the effective acoustic field of the ultrasonic beams of each a predetermined number of frequencies by selectively operating the ultrasonic transducer elements or interchanging transducers. The shapes of the effective acoustic fields of the ultrasonic beams of the plural frequencies are made substantially coincident in accordance with the range of distance from the probe. Thereby, the measuring of the tissue or the like with coincident shaped beams of plural frequencies can be realized.

REFERENCES:
patent: 3156110 (1964-11-01), Clynes
patent: 3292018 (1966-12-01), Clynes
patent: 3924454 (1975-12-01), McElroy et al.
patent: 4161121 (1979-07-01), Zitelli et al.
patent: 4398539 (1983-08-01), Proudian

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