J Cancer 2013; 4(3):200-209. doi:10.7150/jca.5858

Review

Advances in CT Colonography for Colorectal Cancer Screening and Diagnosis

Judy Yee^✉, Stefanie Weinstein, Tara Morgan, Patrick Alore, Rizwan Aslam

Dept. of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA 94121, USA

Abstract

CT colonography (CTC) is a validated colorectal cancer test that provides an additional minimally-invasive screening option which is likely to be preferred by some patients. Important examination prerequisites include adequate colonic cleansing and distention. Tagging of residual material aids in the differentiation of true polyps from stool. Low radiation dose technique should be employed routinely for screening studies. Readers must be skilled in the use of both 2D and 3D interpretation methods.

Keywords: CT colonography, colorectal cancer