Review
Copyright ©2008 The WJG Press and Baishideng.
World J Gastroenterol. Feb 14, 2008; 14(6): 853-863
Published online Feb 14, 2008. doi: 10.3748/wjg.14.853
Table 1 Characteristics of medical images in detecting CRC
ModalitiesCharacteristics
DCBECost-effective, efficient, safe, could be performed and interpreted by GI radiographers to reduce waiting
ColonoscopyCost-effective, endoscopic resection of polyps, endomicroscopy opening the way of in vivo molecular imaging
CTCLess uncomfortable, minimally invasive, with radiation exposure, 3D virtual dissection of colon,
MRCLimited bowel preparation, unpleasant rectal tube, filling colon with saline and contrast, no radiation
PET/CTCAccurate whole-body tumor staging, with integrated morphological and functional images, more irradiation
Table 2 Comparison of medical image modalities’ values in colonography
ModalitiesSpecificitySensitivityAccuracy
DCBE++-
Colonoscopy++++++++
CTC+++_
MRC++++
ET/CTC+++++++