Combination tomographic and cardiographic ultrasonic imaging met

Details Combination tomographic and cardiographic ultrasonic imaging met Combination tomographic and cardiographic ultrasonic imaging met

1981-02-04

1984-01-03

Howell, Kyle L.

Surgery

Truss

Pad

A61B 1000

Patent

active

044237375

ABSTRACT:
Ultrasonic echo signals are successively sampled and converted to digital echo data which are written into a first digital memory column by column and then read out row by row into a first buffer memory. The digital echo data which are derived in response to beams successively transmitted in a predetermined direction are written into columns of a second digital memory and read out of the memory in rows into a second buffer memory. The data stored in the first and second buffer memories are read out for digital-to-analog conversion and selectively applied within a television "frame" interval to control electron beam intensity of a single cathode ray tube so as to present tomographic and cardiographic images in different display areas of the tube.

REFERENCES:
patent: 3954098 (1976-05-01), Dick et al.
patent: 4267584 (1981-05-01), McKeighen et al.
patent: 4271842 (1981-06-01), Specht et al.
patent: 4274422 (1981-06-01), Anderson et al.
patent: 4310907 (1982-06-01), Tachita et al.
Takemura et al., "Highspeed Ultrasono-Cardiotomograph," Sonolayergraph Model SSL51H.

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