Flat polyps of the colon: detection with 16-MDCT colonography--preliminary results.
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.


CONCLUSIONS
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.
Park
Seong Ho
SH
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.
Ha
Hyun Kwon
HK
Kim
Ah Young
AY
Kim
Kyoung Won
KW
Lee
Moon-Gyu
MG
Kim
Pyo Nyun
PN
Shin
Yong Moon
YM
Byeon
Jeong-Sik
JS
Yang
Suk-Kyun
SK
Kim
Jin Ho
JH
Min
Young Il
YI
D000368:Aged; D003111:Colonic Polyps / Q000000981:diagnostic imaging* / Q000473:pathology*; D023881:Colonography, Computed Tomographic / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies