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摘要:
In view of the discrete characteristics of biological tissue, doublet mechanics has demonstrated its advantages in the mathematic description of tissue in terms of high frequency (>10 MHz) ultrasound. In this paper, we take human breast biopsies as an example to study the influence of the internodal distance, a microscope parameter in biological tissue in doublet mechanics, on the sound velocity and attenuation by numerical simulation. The internodal distance causes the sound velocity and attenuation in biological tissue to change with the increase of frequency. The magnitude of such a change in pathological tissue is distinctly different from that in normal tissue, which can be used to differentiate pathological tissue from normal tissue and can depict the diseased tissue structure by obtaining the sound and attenuation distribution in the sample at high ultrasound frequency. A comparison of sensitivity between the doublet model and conventional continuum model is made, indicating that this is a new method of characterizing ultrasound tissue and diagnosing diseases.
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篇名 Relationships of the internodal distance of biological tissue with its sound velocity and attenuation at high frequency in doublet mechanics
来源期刊 中国物理B(英文版) 学科
关键词 doublet mechanics sound velocity sound attenuation ultrasound tissue characteristics
年,卷(期) 2015,(4) 所属期刊栏目
研究方向 页码范围 044302-1-044302-5
页数 1页 分类号
字数 语种 英文
DOI 10.1088/1674-1056/24/4/044302
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doublet mechanics
sound velocity
sound attenuation
ultrasound tissue characteristics
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中国物理B(英文版)
月刊
1674-1056
11-5639/O4
北京市中关村中国科学院物理研究所内
eng
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17050
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27962
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