| 摘要 |
<p>An ultrasonograph capable of controlling a specimen contact surface temperature to a specified value or below without installing a temperature sensor and without setting ultrasonic output to an excessively low value, wherein a reflection time t1 in which ultrasonic is passed through oil (6), reflected on the inner surface of a window (5), and returned through the oil and a reflection time t2 in which the ultrasonic is passed through the window, reflected on the outer surface of the window, and returned through the window and oil are detected, a window sound velocity = (thickness of window x 2)/(t2 - t1) is measured, and the surface temperature of the window is detected by using the measured sound velocity.</p> |
