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Fecal-tagging CT colonography with structure-analysis electronic cleansing for detection of colorectal flat lesions.

Abstract：

PURPOSE:To evaluate the feasibility and sensitivity of the 3D-reading of fecal-tagging CT colonography (CTC) with a novel structure-analysis electronic cleansing (SAEC) in detecting colorectal flat lesions in comparison with a cleansed 3D reading with Viatronix V3D Colon system (V3D) and primary uncleansed 2D reading (2D). MATERIALS AND METHODS:Forty CTC cases with flat lesions were retrospectively observed. The Subjects from a multicenter clinical trial underwent cathartic bowel preparation with orally administrated barium-based fecal-tagging. Sixty-nine flat lesions were confirmed using colonoscopy and histopathology as a reference standard. The results from SAEC reading were compared with those of prospective V3D and 2D readings. RESULTS:Overall detection sensitivity with SAEC was 52% (36/69), which was statistically higher than that of 32% (22/69) and 29% (20/69) with V3D and 2D readings, respectively (p<0.05). The sensitivities in detecting not-on-fold flat lesions were 63% (24/38), 45% (17/38), and 42% (16/38) with SAEC, V3D, and 2D readings, respectively; whereas those of on-fold flat lesions were 39% (12/31), 16% (5/31), and 13% (4/31), respectively. None of the eight flat lesions (2-9mm) at cecum was detected by any of the three reading methods. Excluding the flat lesions at cecum, the sensitivity with SAEC for detecting flat lesion ≥4mm increased to 84% (31/37). CONCLUSIONS:The fecal-tagging CTC with structure-analysis electronic cleansing could yield a high sensitivity for detecting flat lesions ≥4mm. The not-on-fold flat lesions were detected with higher sensitivity than on-fold flat lesions.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Xu Y,Cai W,Nappi J,Yoshida H

doi

10.1016/j.ejrad.2011.04.051

subject

Has Abstract

pub_date

2012-08-01 00:00:00

pages

1712-6

issue

8

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(11)00458-X

journal_volume

81

pub_type

杂志文章,多中心研究

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