Ultrasonic imaging apparatus

Details Ultrasonic imaging apparatus Ultrasonic imaging apparatus

1989-07-24

1990-10-16

Chapman, John

Measuring and testing

Vibration

By mechanical waves

12866101, G01N 2900

Patent

active

049626671

ABSTRACT:
In an ultrasonic imaging apparatus utilizing an array type ultrasonic probe having a number of arrayed probe elements, high frequency pulse signals subject to different delays are supplied to respective probe elements so as to generate an acoustic beam which converges to a predetermined focal point. When receiving a reflection acoustic beam resulting from the converging beam, a plurality of signal lines extending from respective probe elements are connected in common to set up a plurality of element groups each having a plurality of adjacently arrayed elements and respective signals derived from respective element groups are differently delayed and added together to generate a reception signal representative of a reception beam having a predetermined focal point.

REFERENCES:
patent: 4180790 (1979-12-01), Thomas
patent: 4235111 (1980-11-01), Hassler
patent: 4351038 (1982-09-01), Alais
patent: 4528854 (1985-07-01), Shimazaki
patent: 4542653 (1985-09-01), Liu
patent: 4641660 (1987-02-01), Bele
patent: 4679176 (1987-07-01), Ogawa et al.

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