Calderon C, Vilkomerson D, Mezrich R, Etzold K F, Kingsley B, Haskin M
J Clin Ultrasound. 1976 Aug;4(4):249-54. doi: 10.1002/jcu.1870040404.
In quantitative measurements of the attenuation of ultrasound in 18 samples of variously normal, benign, and malignant breast tissue, we found significantly different ranges of attenuation. As observed in previous in vivo studies, with the exception of medullary carcinoma, malignant tissue produces the most attentuation of ultrasound in the frequency range of 1.5 to 3.0 MHz we employed. The apparatus, measurement method, results, and the possible causes of the differences in attenuation are presented.
在对18个不同的正常、良性和恶性乳腺组织样本进行超声衰减的定量测量中，我们发现衰减范围存在显著差异。正如先前体内研究中所观察到的，除髓样癌外，在我们使用的1.5至3.0兆赫频率范围内，恶性组织对超声的衰减最大。本文介绍了测量仪器、测量方法、结果以及衰减差异的可能原因。
