Ultrasonic method and apparatus for imaging and characterization

Details Ultrasonic method and apparatus for imaging and characterization Ultrasonic method and apparatus for imaging and characterization

1975-12-22

1977-12-20

Howell, Kyle L.

Surgery

Truss

Perineal

73574, 73610, 128 205Z, A61B 1000

Patent

active

040635490

ABSTRACT:
Method and apparatus are provided for the determination of the Raylographic information of a body part which is ensonified by acoustical energy pulses by a particularly precisely focused acoustical focusing system to produce acoustical energy echo pulses which are detected in coherent manner. Fourier transformation of the pulses from the time to the frequency domain enables frequency domain deconvolution to provide the impulse response with minimization of mathematical instabilities and distortion of the frequency domain impulse response. Noise extraction and spatial deconvolution filtering are included to respectively maximize signal to noise ratio and minimize distortive effects of body part surface non-orthogonality and combine with the above to provide for particular stability in the overall results and attendant increase in the axial resolution of Raylographic display and in the overall resolution of body part image displays.

REFERENCES:
patent: 3830223 (1974-08-01), Beretsky et al.
patent: 3856985 (1974-12-01), Yokoi et al.
patent: 3934458 (1976-01-01), Beretsky et al.

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