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Imaging Mechanisms of Endoscopic Ultrasonography of Gastrointestinal Lesions Kazuya Akahoshi 1 , Masaru Kubokawa 1 , Masafumi Oya 2 , Toshiaki Mori 3 1Department of Gastroenterology, Aso Iizuka Hospital, Iizuka, Japan 2Department of Pathology, Aso Iizuka Hospital, Iizuka, Japan 3Division of Central Laboratory, Aso Iizuka Hospital, Iizuka, Japan Keyword: 超音波内視鏡検査 , 消化管 , 超音波学 , 病理組織学 pp.1298-1311
Published Date 2018/8/25
DOI https://doi.org/10.11477/mf.1403201468
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 Imaging mechanisms of EUS(endoscopic ultrasonography)of gastrointestinal lesions are outlined using the ultrasonography theory. Ultrasonic waves are generated electrically for a short time period using a probe then emitted into the body and return via various types of reflection phenomena, including reflection, scattering, and refraction, at several boundary surfaces of the body. EUS images were created by receiving the returning ultrasonic waves and converting them back to electric signals. Consequently, EUS images contain many artifacts caused by reflection phenomena. To improve the diagnostic accuracy of EUS in the day-to-day clinical setting, it is important to interpret the EUS images correctly to reflect the types of ultrasonic wave phenomena present in the gastrointestinal wall.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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