Analysis by A. Laghi
CT colonography (CTC), eighteen years after its introduction, is in a mature stage. It is recommended for different clinical indications [ 1], and the American Cancer Society, the US Multi-Society Task Force on Colorectal Cancer and the American College of Radiology have endorsed it as a valuable test for colorectal cancer screening [ 2]. In 2007, the European Society of Gastrointestinal and Abdominal Radiology (ESGAR) published the first consensus statement on CTC in order to collect the experiences of major European centers and to provide common guidelines about the optimal examination protocol [ 3]. Since then, advances in CT scanner technology, development of new, fast and user-friendly software for data analysis, and improvement of patient compliance (thanks to the optimization of reduced bowel preparation regimens and the introduction of devices for colonic CO 2 insufflation) have revolutionized CTC protocols and made the first consensus statement obsolete.