A wide range of diagnostic tools are available to study patients with CRC, including optical colonoscopy, double contrast barium enema (DCBE), computed tomography (CT), magnetic resonance (MR) and positron emission tomography (PET).7 ESGE/ESGAR recommend computed tomographic colonography (CTC) as the radiological examination of choice for the diagnosis of colorectal neoplasia.6
6. Role of preoperative CT colonography in patients with colorectal cancer. Lapo Sali, Massimo Falchini, Antonio Taddei, Mario Mascalchi. World J Gastroenterol 2014 April 14; 20(14): 3795-3803
7. Colorectal cancer: imaging surveillance following resection of primary tumour. Ken Milescorresponding authora and Guy Burkillb. Cancer Imaging. 2007; 7(Special issue A): S143–S149.