CT colonography
noun [ C or U ] medical specialized uk/siːˌtiː kəʊ.lənˈɒɡ.rə.fi/ us/ˈsiːˌtiː ˌkɑːl.əˈnɑːɡ.rə.fi/ (also virtual colonoscopy)
计算机断层扫描结肠造影
a process in which images are produced of the inside of the colon and rectum, and displayed on a screen, to see if cancer is present