Digital rectilinear ultrasonic imaging system

Details Digital rectilinear ultrasonic imaging system Digital rectilinear ultrasonic imaging system

1977-12-23

1978-11-28

Ruehl, Charles A.

Measuring and testing

Vibration

By mechanical waves

G01N 2900

Patent

active

041270347

ABSTRACT:
A B-scan ultrasonic imager produces a rectilinear image and has a linear transducer array with only one switch per element. Individual elements or overlapping transmit subarrays are selected sequentially to generate pulses of ultra-sound. Received echo signals are sequentially sent down a long shift register delay line, are tapped off at the pulse repetition rate, and delayed by different amounts in the several channels and summed to effect time delay focusing of the echoes. The video output signal is post-processed to improve the TV monitor picture; interpolated image lines are conveniently derived with this architecture.

REFERENCES:
patent: 3481186 (1969-12-01), Cellitti et al.
patent: 3789833 (1974-02-01), Bom
patent: 3911730 (1975-10-01), Niklas
patent: 4012952 (1977-03-01), Dory
patent: 4058003 (1977-11-01), Macovski
patent: 4070642 (1978-01-01), Iinuma et al.

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