공기주입 직장 확장 F-18 FDG PET/CT의 임상적 유용성 (The Clinical Utility of Rectal Gas Distension F-18 FDG PET/CT) |
Author |
김진숙1, 임석태1,2,3, 정영진1,3, 김동욱1,2,3, 정환정1,2,3, 손명희1,2,3, |
Jin-Suk Kim, M.D.1, Seok Tae Lim, M.D.1,2,3, Young Jin Jeong, M.D.1,2, Dong Wook Kim, Ph.D.1,2,3, Hwan-Jeong Jeong, M.D.1,2,3, and Myung-Hee Sohn, M.D.1,2,3 |
Affiliation |
전북대학교 의학전문대학원 핵의학교실1, 임상의학연구소2, 사이클로트론연구소3 1Department of Nuclear Medicine, 2Research Institute of Clinical Medicine, and 3Cyclotron Research Center, Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk, Republic of Korea |
Abstract |
Purpose: The aim of this study was to evaluate the clinical value of rectal gas distension F-18 FDG PET/CT imaging for the differentiation of the rectal focal uptake lesions. Materials and Methods: Twenty four patients (M:F=11:13, Age 62.8¡¾12.4 years) underwent rectal gas distension F-18 FDG PET/CT, prospectively: initial image at 50-60 min after the intravenous injection of F-18 FDG and rectal distension image after the infusion of air through the anus. Focally increased uptake lesions on initial images but disappeared on rectal distension images defined a physiological uptake. For the differential evaluation of persistent focal uptake lesions on rectal distension images, colonoscopy and histopathologic examination were performed. Results: Among the 24 patients, 27 lesions of focal rectal uptake were detected on initial images of F-18 FDG PET/CT. Of these, 7 lesions were able to judge with physiological uptake because the focal increased uptake disappeared from rectal distension image. Remaining 3 lesions were non-rectal lesions (2 lesions: rectovesical space, 1 lesion: uterine myoma). Among 17 lesions which was showed persistent increased uptake in rectal distension image, 15 lesions were confirmed as the malignant tumor (SUVmax=15.9¡¾6.8) and 2 lesions were confirmed as the benign lesions including adenoma and inflammatory disease. Conclusion: The rectal distension F-18 FDG PET/CT imaging could be an important noninvasive method for the differentiation of malignant and benign focal rectal uptake lesions including physiologic uptake. |
Keyword |
Rectal distension image, F-18 FDG, PET/CT |
Full text Article |
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