High resolution phased array echo imager

Details High resolution phased array echo imager High resolution phased array echo imager

1992-11-12

1994-10-18

Jaworski, Francis

Surgery

Truss

Pad

A61B 800

Patent

active

053558880

ABSTRACT:
An ultrasound imaging system, and method for using the same, includes an active transducer and transmitter for producing a pulse of ultrasonic energy steerable in the direction of one or more targets. The active transducer is also coupled to a receiver for receiving an echo of the pulse returned from each target. A second, passive phased-array transducer acts as another receiver and is electronically steerable to receive echoes of the pulse returned from each target. A controller coordinates steering of the active and passive transducer "listening" directions toward each target, and a signal processor processes the echoes received by the receivers from each target to form a composite image of the target. A second passive transducer can be added to further enhance the imaging resolution. In preferred embodiments, the active and passive transducers are electronically steered phased array transducers.

REFERENCES:
patent: 4252026 (1981-02-01), Robinson
patent: 4254662 (1981-03-01), Kuroda et al.
patent: 4319489 (1982-03-01), Yamaguchi et al.
patent: 4553437 (1985-11-01), Luthra et al.
patent: 4566459 (1986-01-01), Umemura et al.
patent: 4694434 (1987-09-01), von Ramm et al.

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