Strengths and weaknesses of dark-lumen MR colonography: Clinical relevance of polyps smaller than 5 mm in diameter at the moment of their detection
Strengths and weaknesses of dark-lumen MR colonography: Clinical relevance of polyps smaller than 5 mm in diameter at the moment of their detection
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DOI：
10.1002/jmri.20734
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发表时间：
2006-11-01
影响因子：
4.4
通讯作者：
Goyen, Mathias
中科院分区：
文献类型：
--
作者：
Ajaj, Waleed;Ruehm, Stefan G.;Goyen, Mathias
Purpose: To assess the clinical relevance of dark-lumen MR colonography (MRC) for the detection of colorectal sions using conventional colonoscopy (CC) and histopathologic examinations as reference standard.Materials and Methods: A total of 72 patients underwent MRC and CC, MRC was performed using a contrast-enhanced high spatial resolution T1 weighted 3D volumetric interpolated breathhold examination (VIBE)-sequence. All removed colorectal lesions were evaluated by an experienced pathologist.Results: CC confirmed 65 polyps less than 5 mm in diameter. Non of those lesions could be detected using MRC. Just two (4%) of the,49 removed lesions smaller than 5 mm showed signs of dysplasia. Additionally, CC confirmed 25 polyps between 6-15 mm in diameter (MRC 22). All those 25 lesions were removed in CC. Only four (16%) of those polyps showed signs of dysptasia and malignancy (11, 13, 13 and 15 mm).Conclusion: Dark-lumen MRC failed to detect all polyps smaller than 5 mm in diameter which are generally not clinically relevant at the moment of their detection and thus can be kept under surveillance. However, MRC as a noninvasive imaging modality is, a promising alternative to CC in the detection of clinically relevant polyps larger than 5 mm in diameter.
