Relationship Between Speed of Sound in and Density of Normal and Diseased Rat Livers
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概要
- 論文の詳細を見る
Speed of sound is an important acoustic parameter for quantitative characterization of living tissues. In this paper, the relationship between speed of sound in and density of rat liver tissues are investigated. The speed of sound was measured by the nondeformable technique based on frequency-time analysis of a 3.5 MHz pulse response. The speed of sound in normal livers varied minimally between individuals and was not related to body weight or age. In liver tissues which were administered CCl_4, the speed of sound was lower than the speed of sound in normal tissues. The relationship between speed of sound and density in normal, fatty and cirrhotic livers can be fitted well on the line which is estimated using the immiscible liquid model assuming a mixture of normal liver and fat tissues. For 3.5 MHz ultrasound, it is considered that the speed of sound in fresh liver with fatty degeneration is responsible for the fat content and is not strongly dependent on the degree of fibrosis.
- 社団法人応用物理学会の論文
- 1994-05-30
著者
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Ohtsuki S
Tokyo Institute Of Technology
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Ohtsuki Shigeo
Precision And Intelligence Laboratory Tokyo Institute Of Technology
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Ohtsuki Shigeo
Institute Of Medical Ultrasound Technology
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Tanaka Motonao
Institute Of Developing Aging And Cancer Tohoku University
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HACHIYA Hiroyuki
Precision and Intelligence Laboratory, Tokyo Institute of Technology
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