Curved array of sequenced ultrasound transducers

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

G - Physics

10

K

26/124

G10K 11/34 (2006.01) G10K 11/02 (2006.01) H01F 7/06 (2006.01)

Patent

CA 1152729

PHA 20925 21-10-1980 ABSTRACT OF THE DISCLOSURE "Curved array of sequenced ultrasound transducers". 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. The array may be manufactured by cutting grooves in a solid bar of piezoelectric ceramic and bending the grooved bar around a mandrel to separate individual transducer elements from each other.

366878

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