2019 Volume 61 Issue 6 Pages 1256-1263
Computed tomographic colonography (CTC) can be considered to be the best radiological test for the diagnosis of colorectal cancer. CTC can be used for both diagnostic and screening applications in colorectal cancer as a complementary examination to colonoscopy. Reading of CTC examinations should include endoluminal three-dimensional (3D) as well as two-dimensional (2D) planar view images. Primary 3D endoluminal fly-through reading is evaluated using 2D images for confirmation and characterization of any potential findings. The primary 2D reading technique is based on lumen tracking in which the physician interactively tracks the course of the distended colonic lumen from the rectum to the cecum. The primary 2D technique is performed with additional endoluminal 3D virtual endoscopic views for problem-solving. Evidence-based reading is mandatory for quality control of CTC.
