1. To appreciate the need for training prior to CTC and understand the role of training courses and double reporting. 2. To become familiar with ways of maximising service efficiency. 3. To appreciate the differences in approach between setting up a service for older symptomatic patients and setting up colorectal cancer screening. 4. To learn how to formulate local polyp reporting guidelines and how best to integrate the service with the needs of local clinicians. 5. To learn a basic audit framework. CT colonography is widely considered as the radiological examination of choice for the large bowel. It has a variety of indications including investigation of symptomatic patients and potentially in screening of asymptomatic individuals. Radiologists undertaking CTC must be well versed in the technical protocol requirements as well as how best to interpret the examination. Furthermore, they must have a thorough understanding of the epidemiology of colorectal neoplasia, so reporting practices are evidence based. This session will guide participants in a stepwise fashion through the pre-requisites to high-quality CTC in 2012. Lectures will discuss how to achieve a high-quality examination, how to interpret the examination and finally consider the requirements for setting up and running a successful CTC service.