Measurement of Acoustic Impedance of Skin
It is important to know the characteristics of the acoustic impedance of a living tissue in order to diagnose with ultrasonic equipment or to design the equipment. Especially, in the immersion method of ultrasonic diagnosis, if strong reflections are produced from mis-matched interface between the skin and the water-bag and that between transducer and water, reverberations occur. The echo from the deep portion of body is disturbed by the reverberation and the strong echo from the mis-matched interface between the skin and the water-bag masks the weak echo from just under the skin. In these cases, it is difficult to make the diagnosis from the echo.
KeywordsReflection Coefficient Acoustic Impedance Adhesive Disk Ultrasonic Equipment Ultrasonic Diagnosis
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