Ultrasonic diagnostic apparatus for controlling the surface...

Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation

Reexamination Certificate

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Details

C374S119000

Reexamination Certificate

active

07438684

ABSTRACT:
A technology is disclosed for holding the test subject contact surface temperature below a predetermined value without providing a temperature sensor or setting ultrasonic wave output excessively low and, according to this technology, reflex time t1,which passes through oil6,is reflected by the inner surface of window5,and is returned via oil, and reflex time t2,which passes through the window, is reflected by the outer surface of the window, and returned via window or oil, are detected,in-line-formulae description="In-line Formulae" end="lead"?sound velocity of window=(thickness of window×2)/(t2−t1)in-line-formulae description="In-line Formulae" end="tail"?is measured, and the surface temperature of the window is detected from this measured sound velocity.

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