Method and device for examination by means of ultrasonic beams

Details Method and device for examination by means of ultrasonic beams Method and device for examination by means of ultrasonic beams

Filed on

1982-09-22

Date issued

1984-05-15

Examiner

Ciarlante, Anthony V.

Patent Class

Measuring and testing

SubClass

Vibration

SubSubClass

By mechanical waves

Other Related Categories

73628, G01N 2904

Type

Patent

Status

active

Patent number

044480768

Description

ABSTRACT:
A method of and a device for ultrasonic examination of an object by means of a row of N electroacoustic transducers. Each time a group of M transducers (M.gtoreq.N) thereof is selected by means of a switching member. These M transducers are first included in transmission networks, transmission signals then being applied to the converters; subsequently, they are included in receive networks, receive signals then being applied to a display device. The transmission and/or receive signals are multiplied by weighting factors between 0 and 1. The sum of the weighting factors during transmission may deviate from that during reception. During transmission and/or reception, at least two different combinations of weighting factors are used, the sum thereof being each time the same. The scanning line density can thus be substantially increased.

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patent: 4252026 (1981-02-01), Robinson
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patent: 4274148 (1981-06-01), van Thullenaar
Ultrasonic Imaging of Arrays; Macouski; Proceedings of IEEE, vol. 67, No. 4, Apr. 1979.

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