Acoustic damping backing material used for ultrasound converters comprises a base gel containing an additive whose acoustic impedance is as large as an ultrasound converter material

摘要

Acoustic damping backing material comprises a base gel containing an additive whose acoustic impedance is as large as an ultrasound converter material. Preferably the damping gel is directly applied to the rear side of an ultrasound converter. The gel is hydrophobic, insensitive toward air moisture changes and is produced as a gradient layer. The additive is a metal powder consisting of tungsten or a physical or chemical similar metal.