Ultrasonic diagnosis apparatus including simple digital scan con

Details Ultrasonic diagnosis apparatus including simple digital scan con Ultrasonic diagnosis apparatus including simple digital scan con

1997-12-22

1999-05-11

Jaworski, Francis J.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

600445, A61B8/00

Patent

active

059022442

ABSTRACT:
An ultrasonic diagnosis apparatus comprises a probe having a plurality of transducers for performing transmission/reception of ultrasonic waves; a selection circuit for sequentially selecting the transducers for performing transmission/reception of ultrasonic waves; and an A/D converter for converting a reception waveform signal from the transducer selected by the selection circuit into a digital waveform signal. The apparatus also includes a memory for storing the digital waveform signal converted by the A/D converter in correspondence with the selected transducer; and a read control circuit having a wavefront locus address generator for generating a wavefront locus data corresponding to time-of-flight data between each point in an ultrasonic scanning region and respective transducers to synthesize a wavefront converging on a point in the ultrasonic scanning region (including points which are not located on lines normal to the radiating surfaces of the transducers). The apparatus also includes an output unit for outputting the wavefront locus data to the memory as a read address in order to read waveform samples along the wavefront; and a synthesis circuit for synthesizing the waveform samples read from the memory by a read address from the read control circuit.

REFERENCES:
patent: 5349960 (1994-09-01), Gondo
patent: 5611343 (1997-03-01), Wilson
patent: 5640961 (1997-06-01), Verdonk
patent: 5706818 (1998-01-01), Gondo

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