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Clinical Observations |
1 Department of Radiology and Research Institute of Radiology, University of
Ulsan College of Medicine, Asan Medical Center, 388-1 Poongnap-Dong,
Songpa-Gu, Seoul, South Korea, 138-040.
2 Department of Internal Medicine, University of Ulsan College of Medicine, Asan
Medical Center, Seoul, South Korea.
OBJECTIVE. This study evaluates the ability of contrast-enhanced, 16-MDCT colonography to display flat colonic lesions when a very narrow slice thickness (1 mm) is used.
CONCLUSION. Less than 50% of flat lesions in our population could be visualized by blinded and unblinded review. Before they could be visualized, flat lesions were 2 mm or greater in height and 7 mm or greater in diameter. Lesions with a height of 1 mm or less were not seen on CT colonography. Contrast enhancement, location on a haustral fold, and abnormal 2D and 3D morphology contributed to lesion conspicuity.
Keywords: colon colonography colonoscopy CT
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