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The Speed of Sound in Rat Liver With Steatohepatitis: Ex Vivo Analysis Using Two Types of Ultrasound Systems |
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| Affiliation: | 2. Department of Clinical Laboratory Medicine, Jichi Medical University, Shimotsuke, Japan;3. Imaging Technology Center, R & D Management Headquarters, Fujifilm Corporation, Tokyo, Japan;4. Hirota Surgical Pathology Institute, Shimotsuke, Japan;5. Saiseikai Rikuzentakata Clinic, Rikuzentakata, Japan;2. Electrical Engineering Department, College of Engineering of São Carlos, University of São Paulo (USP), São Carlos, São Paulo, Brazil;2. Department of Radiology, The First Affiliated Hospital of Xi''an Jiaotong University, Xi''an, People''s Republic of China;3. Department of Orthopedics, The Second Affiliated Hospital of Xi''an Jiaotong University, Xi''an 710061, People''s Republic of China;2. Vascular Diseases Center, University of Ferrara, Via Aldo Moro 8, 44124 Cona (FE), Italy;2. Vascular and Interventional Radiology Clinical Science Center, The Chinese University of Hong Kong, Hong Kong SAR;3. Department of Obstetrics and Gynecology, The Chinese University of Hong Kong, Hong Kong SAR |
| Abstract: | We have previously reported a non-invasive method that would be clinically applicable for measurement of speed of sound (SOS) in the liver. The objective of the present study was to confirm the utility of this new method for assessing over time the SOS in liver with progressive steatohepatitis of different grades and stages. Rats were divided into two groups—a control group and a steatohepatitis group—prepared by keeping the rats on a methionine and choline-deficient diet for 43 wk. The SOS through the liver tissue was measured using the new method in comparison with a pulse-receiver as the standard. The SOS through liver with steatohepatitis temporarily decreased with the fat deposition level and then increased in parallel with the progression of inflammation and fibrosis. Monitoring the change in SOS through liver tissue in individual patients with fatty liver would have considerable potential for assisting the non-invasive detection of early-stage steatohepatitis. |
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