Ultrasonic doppler diagnostic device

Details Ultrasonic doppler diagnostic device Ultrasonic doppler diagnostic device

A - Human Necessities

61

B

349/36

A61B 8/06 (2006.01)

Patent

CA 1243106

ULTRASONIC DOPPLER DIAGNOSTIC DEVICE ABSTRACT OF THE DISCLOSURE An ultrasonic diagnostic device for measuring the velocity of blood flow within a living body comprises a receiver for amplifying a received wave in accordance with a logarithmic amplification characteristic and at least one inverse logarithmic converter which produces an output having an inverse logarithmic characteristic with respect to the input thereto. As a result, the device can carry out high-precision measurement of blood flow even when the component of the received wave corresponding to the blood flow is much smaller than a component of the received wave corresponding to the wall of the blood vessel or heart through which the blood is flowing.

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