Three-Dimensional Image of Esophageal Cancer and Gastric Cancer Using MR Endoscopy Fumiaki Kitahara 1 , Masayuki A. Fujino 1 , Tadashi Sato 1 , Yuichiro Kojima 1 , Atsuro Morozumi 1 1The First Department of Internal Medicine, Yamanashi Medical University Keyword: MR内視鏡 , 深達度 , 胃癌 , 食道癌 , 超音波内視鏡 pp.175-180
Published Date 1998/2/25
DOI https://doi.org/10.11477/mf.1403103574
  • Abstract
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 Conventional magnetic resonance (MR) imaging of esophageal and gastric cancer is performed with body and surface coils. Body and surface coils often inadequately depict invasion into the esophageal adventitia or the gastric serosa. We performed local staging of esophageal and gastric cancer with use of a MR endoscope with a 3 cm-long receive-only coil embedded in its tip. MR endoscopy was performed with T1-weighted, fast-spin-echo T2-weighted, and frequency-selective fat-saturated T1-weighted gadolinium enhanced sequences. We are also investigating the optimal combination of a phased-array surface coil with the endoscopic coil to improve signal-to-noise ratio in our images. Esophageal cancer was imaged by a high-intensity display on T1-weighted imaging and fast spinecho. Gastric cancer was imaged by a low-intensity display on T1-weighted imaging and fast SPGR. Compared to endoscopic ultrasonography, we obtained clearer images of the esophageal and gastric cancer in the deep layer by MR endoscopy. The advantages of endoscopic MRI are as follows : The three-dimensional tomography provided by this method enables us to select the area to be scanned, produces images that differ from those obtained with endoscopic ultrasonography or CT scanning, and allows us to evaluate the character of the tumor tissue by changing pulse sequence parameters, selecting adequate gradient-echo sequences, or using contrast media. We concluded that there are important potential advantages using this technique in lesion staging and patient treatment planning.

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