【摘要】 对猪的肌肉、脂肪、肾和肝等四种组织,在1-6MH_z的频率范围内,利用不同直径的压电接收换能器,初步研究了相位敏感接收换能器对测量非均匀组织中超声衰减的影响。更多还原

【Abstract】 Using piezoelectric receiving transducers with different diameters to measure the ultrasonic (?)ttenuation to tissues such as muscle, fat, kidney, and liver of a pig in the frequency range 1-6 MHz, we have evaluated the effect of the phase ensitivc receiver on the measurement.更多还原