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This paper focuses on the mechanisms and affects that element damage has on the overall quality and efficacy of the ultrasound study. An acoustic stack, the performance heart of a transducer, is comprised of the following; backing material, piezo-electric ceramic and a matching layer. The backing material reduces the ring-down time of an excited element, a critical factor to ensuring optimal axial resolution and low noise. The matching layer matches the acoustic impedance of the piezo-electric array with body tissue.
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