Ultrasonic apparatus

Details Ultrasonic apparatus Ultrasonic apparatus

1993-07-19

1994-11-01

Kamm, William E.

Surgery

Truss

Pad

12866206, A61B 812

Patent

active

053600070

ABSTRACT:
An ultrasonic apparatus for transmitting ultrasonic waves and receiving reflection waves from an examination subject for display is used in a blood vessel with a catheter for two-dimensional imaging and three-dimensional scanning for three-dimensional imaging. The ultrasonic apparatus includes a transducer, installed within a catheter, which transmits ultrasonic waves in a direction corresponding to a transducer drive signal frequency and receives reflection waves from an examination subject, to display a tomogram image obtained by the transducer. Also, the ultrasonic apparatus includes an ultrasonic probe having arrayed transducers in an elongated shape which transmit ultrasonic waves in a direction corresponding to a transducer drive signal frequency and receive reflection waves from an examination subject, and a device for electronic scanning and focusing in a direction of array of the transducers in the elongated shape, and electronic scanning in a direction perpendicular to that direction is conducted by changing the transducer drive signal frequency.

REFERENCES:
patent: 3815409 (1974-06-01), Macovski
patent: 4747411 (1988-05-01), Ledley
patent: 5070879 (1991-12-01), Herres
patent: 5109861 (1992-05-01), Walinsky et al.
patent: 5115809 (1992-05-01), Saitoh et al.
K. Katakura, "Underwater Acoustic Imaging By Frequency Controlled Beam Scanning," 1975, pp. 716-724.

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