Ultrasonic imaging by radial scan beams emanating from a hypothe

Details Ultrasonic imaging by radial scan beams emanating from a hypothe Ultrasonic imaging by radial scan beams emanating from a hypothe

1980-11-14

1983-01-18

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

73606, 128660, G01N 2900

Patent

active

043686435

ABSTRACT:
An ultrasonic imaging system includes a linear array of transducers of which a group of successively arranged transducers is selected and successively shifted to the next by at least one transducer. The transducers of the selected group are successively activated at respective delay times to transmit a radial scan beam which appears to emanate from a hypothetical point source located behind the transducer array. A scan converter is provided for conversion of analog echo signals in sector scan format to digital echo data in raster format for visual display.

REFERENCES:
patent: 4159462 (1979-01-01), Rocha et al.
patent: 4164213 (1979-08-01), Hoelzler
patent: 4204435 (1980-05-01), Bridoux et al.
patent: 4254662 (1981-03-01), Kuroda et al.
patent: 4310907 (1982-01-01), Tachita et al.

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