“…Those include colonoscopy, as well as Fecal Occult Blood Test (FOBT) (Sanford and McPherson, 2009;Heitman et al, 2008), Digital Rectal Examination (DRE) (Gopalswamy et al, 2000), biomedical markers (Karl et al, 2008), CT colonography (Halligan and Taylor, 2007;Yoshida and Dachman, 2004), MR colonography (Shin et al, 2010;Beets and Beets-Tan, 2010), Marvin Positron Emission Tomography (PET) , Ultrasound (Padhani, 1999), Double Contrast Barium Enema (DCBE) (Johnson et al, 2004;Canon, 2008), Confocal Laser Endomicroscopy (CLE) (Kiesslich et al, 2007), and Virtual Endoscopy (Oto, 2002). Interested readers are referred to the following surveys on colorectal cancer screening and clinical staging of colorectal cancer (Jenkinson and Steele, 2010;Tweedle et al, 2007;Barabouti and Wong, 2005) and endoscopic imaging devices (Gaddam and Sharma, 2010).…”