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Discussion of mechanism behind “bamboo blind” sign observed in fatty liver parenchyma
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- KAMIYAMA Naohisa
- Ultrasound Division, GE Healthcare
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- SUMINO Yasukiyo
- Department of Gastroenterology and Hepatology, Toho University Omori Medical Center
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- MARUYAMA Kenichi
- Department of Clinical Functional Physiology, Toho University Omori Medical Center
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- MATSUKIYO Yasushi
- Department of Gastroenterology and Hepatology, Toho University Omori Medical Center
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- WAKUI Noritaka
- Department of Gastroenterology and Hepatology, Toho University Omori Medical Center
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- SHINOHARA Masao
- Department of Gastroenterology and Hepatology, Toho University Omori Medical Center
Bibliographic Information
- Other Title
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- 脂肪肝実質に出現する“簾状エコー”の発生機序に関する考察
- Discussion of mechanism behind “bamboo blind” sign observed in fatty liver parenchyma
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Description
Purpose: To elucidate the mechanism behind the so-called “bamboo blind” sign frequently observed on B-mode images as multiple low-echoic lines in nonalcoholic steatohepatitis and highly fatty liver cases. Subjects and Methods: Six types of acoustic shadowing artifacts that might be the cause of the bamboo blind sign were defined. B-mode images were acquired for 21 fatty liver cases (inc. 9 highly fatty liver cases). The cases were then pathologically diagnosed. A phantom experiment was also performed to investigate whether the refraction occurs due to the gap of sound velocity between two different media. Results and Discussion: The mechanism of the bamboo blind sign corresponded well to the acoustic shadowing from small vessels in the liver. The phantom experiment validated the same phenomenon at a larger gap in sound velocity, which can be regarded as the same level as that in highly fatty liver cases. Conclusion: The refraction between blood vessels and highly fatty liver parenchyma with decreased sound velocity is the dominant reason for the bamboo blind sign.
Journal
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- Choonpa Igaku
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Choonpa Igaku 43 (5), 655-662, 2016
The Japan Society of Ultrasonics in Medicine
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Details 詳細情報について
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- CRID
- 1390282680175956736
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- NII Article ID
- 130005414888
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- ISSN
- 18819311
- 13461176
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed