| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic probe having an acoustic backing layer which has high uniformity between micro channels, superior heat radiation characteristics, a large attenuation factor, and high strength and high insulating property. SOLUTION: An ultrasonic probe comprises: the acoustic backing layer made of a composite resin material including a plurality of bonded fibers within the resin, each of the bonded fibers being formed of a plurality of zinc oxide fibers bonded to each other at one edge portions and extending in different directions in the other edge portions, the composite resin material exhibiting an acoustic impedance of 1.3 to 6 MRayls at room temperature of 25°C; a plurality of channels arranged on the acoustic backing layer with space, each channel having a piezoelectric element and an acoustic matching layer formed on the piezoelectric element; and an acoustic lens formed to cover at least the surface of the acoustic matching layer of each channel. COPYRIGHT: (C)2008,JPO&INPIT
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