Ultrasonic shear wave properties of soft tissues and tissuelike materials

摘要: Determinations of shear wave speeds sound and attenuation coefficients are reported for soft tissues, a silicone rubber reference material, gel used in manufacturing ultrasonically tissue‐mimicking materials. Fresh bovine tissues were investigated, including calfskin, liver, cardiac muscle, striated muscle. Because the very large coefficients, reasonably accurate determinations properties difficult to make. The quantity measured directly was complex reflection coefficient waves at planar interface between sample fused silica. Measurements made frequencies spanning range 2–14 MHz. increase with frequency order 104 times longitudinal coefficients. also but only few percent sound. results enough allow dependencies be proposed.