Research progress of CT virtual colonoscopy for early screening of colorectal neoplasmas

Since the application of computed tomography virtual colonography(CTVC) in clinic, it shows an increasing superiority in the diagnosis of colorectal cancer(CRC). Its high image quality, low radiation dose and high scanning speed make it possible to become a suitable method for the early diagnosis of CRC. This article makes a brief review about the progress of CTVC in the diagnosis of CRC and its clinical value.