TY - JOUR T1 - Review: computed tomographic colonography is accurate for medium and large colorectal polyps and cancer JF - Evidence Based Medicine JO - Evid Based Med SP - 153 LP - 153 DO - 10.1136/ebm.11.5.153 VL - 11 IS - 5 A2 - , Y1 - 2006/10/01 UR - http://ebm.bmj.com/content/11/5/153.abstract N2 - Halligan S, Altman DG, Taylor SA, et al. CT colonography in the detection of colorectal polyps and cancer: systematic review, meta-analysis, and proposed minimum data set for study level reporting. Radiology 2005;237:893–904.OpenUrlCrossRefPubMedWeb of Science 
 
 Q Is computed tomographic colonography (CTC) an accurate test for the diagnosis of colorectal polyps and cancer? Clinical impact ratings Internal medicine ★★★★★★☆ Gastroenterology ★★★★★☆☆ Oncology ★★★★★☆☆ Surgery—colorectal ★★★★★☆☆ Data sources: Medline (1994–2003); EMBASE/Excerpta Medica, Science Citation Index, Cochrane Controlled Trials Register, and relevant key journals (1994 to May 2003); and reference lists of included studies. Study selection and assessment: full reports in any language of cohort studies that evaluated the use of CTC for the detection of colorectal polyps; used full bowel preparation, prone and supine images, helical scanners, and commercially available software; and blinded interpreters to the results of the reference standard (colonoscopy or surgical findings). Studies with <30 patients or a high proportion of patients with known abnormality were excluded. 24 studies (n = 4181) met the selection criteria. … ER -