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Diagnostic Ability of Diffusion-weighted Magnetic Resonance Imaging to Discriminate Ampullary eoplasms: A Preliminary Study of 15 Cases
https://showa.repo.nii.ac.jp/records/604
https://showa.repo.nii.ac.jp/records/6045207a69d-3586-4d4b-8aab-46b2f7f5ddab
名前 / ファイル | ライセンス | アクション |
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S26_201.pdf (449.9 kB)
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Item type | 学内発行雑誌 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2015-11-20 | |||||
タイトル | ||||||
タイトル | Diagnostic Ability of Diffusion-weighted Magnetic Resonance Imaging to Discriminate Ampullary eoplasms: A Preliminary Study of 15 Cases | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ | departmental bulletin paper | |||||
著者 |
NAGAHAMA, Masatsugu
× NAGAHAMA, Masatsugu× MARUOKA, Naotaka× YAMAMURA, Eiichi× TAKANO, Yuichi× TAKEYAMA, Nobuyuki× HASHIMOTO, Toshi× UMEMOTO, Takahiro× TANAKA, Junichi× TAKAHASHI, Hiroshi |
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書誌情報 |
The Showa University journal of medical sciences 巻 26, 号 3, p. 201-210, 発行日 2014-09 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We assessed the diagnostic capability of diffusion-weighted magnetic resonance imaging (DWI) to predict the histological diagnosis of ampullary lesions to resolve the diagnostic uncertainty of endoscopic biopsy for ampullary neoplasms. From January 2009 to August 2011, we performed DWI using b values of 0 and 1000s/mm2 for 15 patients with a histological diagnosis of ampullary lesion (adenocarcinoma, n = 8; adenoma, n = 4; hyperplasia, n = 3). We compared the signal intensities (determined by comparing signal intensities of ampullary lesions and rating them as markedly hyperintense, hyperintense, or hypo-to-isointense relative to the duodenal wall) and the apparent diffusion coefficient (ADC, × 10-3 mm2/s) values of the ampullary lesions on DWI among the three groups based on the histological diagnosis. Values are expressed as median (range). The cancer-group lesions showed a significantly higher signal intensity than either adenoma or hyperplasia (markedly hyperintense/hyperintense/hypo-to-isointense; adenocarcinoma, 7/1/0; adenoma, 0/4/0; hyperplasia, 0/0/3; P < 0.005). The ADC values were significantly lower in adenocarcinoma at 1.46 (0.83-1.63) than in either adenoma at 2.14 (1.92-2.37) or hyperplasia at 2.06 (1.88-2.53) (P < 0.005). In addition, the ADC values in the malignant group (adenocarcinoma) were significantly lower than those in the benign groups (adenoma and hyperplasia) (P < 0.001). The findings suggested that DWI could contribute significantly to accurate preprocedural diagnosis of ampullary lesions. | |||||
DOI | ||||||
関連識別子 | 10.15369/sujms.26.201 | |||||
出版者 | ||||||
出版者 | Showa University Society | |||||
ISSN | ||||||
収録物識別子 | 0915-6380 | |||||
著者版フラグ | ||||||
出版タイプ | VoR |