Ultrasonic image reconstruction methods and apparatus

Details Ultrasonic image reconstruction methods and apparatus Ultrasonic image reconstruction methods and apparatus

1979-06-18

1982-05-11

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

73626, 128660, G01N 2900

Patent

active

043287077

ABSTRACT:
Reconstruction of two-dimensional distribution of attenuation coefficients or sound velocities in a cross-sectional plane of an object is achieved by carrying out a plurality of measurements of absorption or of flight time with ultrasound bursts directed by elementary transmitting probes along several different incidences in the sectional plane. Switching between successive measurements is carried out by electronic scanning, without movement of the individual probes. Focusing of the burst energy transmitted by a group of probes is achieved by applying a same electrical signal to the probes with appropriate delays. The secured signals are stored and, after completion of the scanning, they are combined for computation of the distribution.

REFERENCES:
patent: 3936791 (1976-02-01), Kossoff
patent: 4070905 (1978-01-01), Kossoff
patent: 4074564 (1978-02-01), Anderson
patent: 4083232 (1978-04-01), Heyser et al.
patent: 4105018 (1978-08-01), Greenleaf et al.
patent: 4222274 (1980-09-01), Johnson

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