作者: James A. Zagzebski , Richard A. Banjavic , Ernest L. Madsen , Mark Schwabe
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摘要: A comparison is made between pulse echo response profiles obtained in water and a tissue-mimicking (TM) material for clinical ultrasound transducers. The TM assumed to provide more accurate indication of actual beam soft tissue because the presence frequency-dependent attenuation material. Pulse measured medium demonstrate reduction focal distance degraded resolution distal distance, water.