Surgery – Truss – Pad
Patent
1984-02-22
1985-08-27
Howell, Kyle L.
Surgery
Truss
Pad
73631, A61B 1000
Patent
active
045371997
ABSTRACT:
In an ultrasonic diagnostic apparatus, the center frequency of the spectrum of the received echo signal is decreased, depending upon the penetration depth of the patient. This phenomenon is noticeable when the frequency of the excited ultrasonic waves is selected to a higher range. The ultrasonic diagnostic apparatus employs an STC circuit, a gain of which is varied in accordance with the penetration depth of the patient.
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Howell Kyle L.
Jaworski Francis J.
Tokyo Shibaura Denki Kabushiki Kaisha
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