使用多共振换能器在2.5-40 MHz频率范围内测量组织的超声衰减

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118) Pub Date : 1997-10-05 DOI:10.1109/ULTSYM.1997.661789

N. Kudo, T. Kamataki, K. Yamamoto, H. Onozuka, T. Mikami, A. Kitabatake, Y. Ito, H. Kanda

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引用次数: 6

摘要

作者开发了一种频率范围为2.5至40 MHz的超声衰减测量系统，并测量了正常、梗死和扩张型心肌病人正式心肌样本的超声衰减系数。衰减测量结果表明，在测量频率范围内，衰减系数随频率的n次幂成比例增加。心肌标本衰减系数成比例增大，梗死为1.3倍，扩张型心肌病为1.2倍，正常心肌衰减系数成比例增大，为1.6倍。这些结果表明，频率相关衰减指数可以用作组织表征的指标。

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Ultrasound attenuation measurement of tissue in frequency range 2.5-40 MHz using a multi-resonance transducer

The authors developed a measurement system of ultrasound attenuation in the frequency range of 2.5 to 40 MHz and measured the ultrasound attenuation coefficients of normal, infarcted, and dilated cardiomyopathy samples of a human formalized myocardium. Results of attenuation measurements showed that the attenuation coefficients increased proportionally to the n-th power of frequency in the measured frequency range. Attenuation coefficients in the myocardium specimens increased proportionally to the 1.3 power for the infarction and 1.2 power for the dilated cardiomyopathy of frequency, respectively, while the attenuation coefficient increased proportionally to the 1.6 power for the normal myocardium. These results suggest that an exponent of frequency-dependent attenuation could be used as an index of tissue characterization.

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来源期刊

1997 IEEE Ultrasonics Symposium Proceedings. An International Symposium (Cat. No.97CH36118)

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