Ultrasonic diagnostic apparatus

Details Ultrasonic diagnostic apparatus Ultrasonic diagnostic apparatus

1990-09-27

1991-10-29

Jaworski, Francis

Surgery

Truss

Pad

73625, 73626, 73628, 12866101, A61B 800

Patent

active

050606514

ABSTRACT:
An ultrasonic diagnostic apparatus which has a probe including a plurality of transducer elements made of an electrostrictive material arranged on a plane in two-dimensional directions, a bias applying unit for selecting the transducer elements in an arbitrary row in the horizontal direction to be in an operative condition by applying the same with a bias voltage, and a switching unit for selecting the transducer elements in at least one arbitrary column in the vertical direction by applying the same with a bias voltage, and controls the bias voltage applying unit and the switching unit to scan an ultrasonic beam in the two-dimensional directions to collect three-dimensional information on a body under inspection.

REFERENCES:
patent: 4168628 (1979-09-01), Vilkomerson
patent: 4662222 (1987-05-01), Johnson
patent: 4674516 (1987-06-01), Hirota et al.
patent: 4759372 (1988-07-01), Umemura et al.
patent: 4794929 (1989-01-01), Maerfeld
patent: 4917097 (1990-04-01), Proudian et al.

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