Measuring and testing – Vibration – By mechanical waves
Patent
1978-05-24
1979-05-15
Kreitman, Stephen A.
Measuring and testing
Vibration
By mechanical waves
128660, 340 5MP, G01N 2900
Patent
active
041541138
ABSTRACT:
A real time ultrasound imaging system which includes coherent demodulation of echo signals followed by time delay and coherent summation of the demodulated signals is described. As the range from which echoes are being received increases, coherent demodulation is maintained. Demodulation and time delay accuracies are relatively easy to maintain over a large field of view and a long range. The system has high resolution and high sensitivity.
REFERENCES:
patent: 3918024 (1975-11-01), Macovski
patent: 4005382 (1977-01-01), Beaver
patent: 4012952 (1977-03-01), Dory
patent: 4058003 (1977-11-01), Macovski
patent: 4079352 (1978-03-01), Burckhardt et al.
Cohen Joseph T.
General Electric Company
Kreitman Stephen A.
Snyder Marvin
Zaskalicky Julius J.
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