Method and equipment for plotting section images of objects subj

Details Method and equipment for plotting section images of objects subj Method and equipment for plotting section images of objects subj

1979-10-26

1982-02-23

Michell, Robert W.

Measuring and testing

Vibration

By mechanical waves

73633, 128660, G01N 2900

Patent

active

043163904

ABSTRACT:
In a method of plotting section images of objects subjected to ultrasonic examination, a section surface of the object is scanned with a sound beam and echoes generated in response to the pulses of the sound beam are converted into echo signals which are plotted on a plotting surface, such as a fluorescent screen or a record carrier, to form a section image. The sound beams scans the section surface at a varying velocity. The pulse repetition period of the sound pulses is varied so that the section surface is scanned with a uniform transverse resolution. In equipment for carrying out the method, the pulse repetition frequency of the sound pulses is controlled by a trigger which generates trigger pulses at times which are functionally related to the scanning movement of the sound beam. The trigger may comprise programmed memory.

REFERENCES:
patent: 3605724 (1971-09-01), Flaherty
patent: 3690311 (1972-09-01), Schorum et al.
patent: 3856985 (1974-12-01), Yokoi et al.
patent: 4010634 (1977-03-01), Baumgartner
patent: 4058001 (1977-11-01), Waxman
patent: 4102204 (1978-07-01), Kretz
patent: 4141347 (1979-02-01), Green et al.
Glenn, W. "Ultrasound Diagnostic Signal Generator," Europaische Patentanmelding No. 0000067 made public Dec. 20, 1978.

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