Curved array of sequenced ultrasound transducers

Details Curved array of sequenced ultrasound transducers Curved array of sequenced ultrasound transducers

1979-12-17

1981-08-04

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

73642, 128660, G01N 2900

Patent

active

042815509

ABSTRACT:
An array of ultrasound transducers for pulsed sector-scan operation includes a plurality of transducer elements disposed on an arc of a circle and oriented to emit and receive ultrasound radiation in the direction of the center of the arc. A group of adjacent transducers within the array is active for each ultrasound pulse. The position of the group in the array is incrementally shifted along the arc, one transducer at a time, to effect scanning. The inherent focussing effect of a curved group of transducers is compensated with time delays or a negative lens to provide a parallel, sector-scanned radiation beam.

REFERENCES:
patent: 3013170 (1961-12-01), Sheldon
patent: 3881466 (1975-05-01), Wilcox
patent: 3971962 (1976-07-01), Green
patent: 4180791 (1979-12-01), Tiemann
patent: 4183249 (1980-01-01), Anderson

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