CT Enterography
Conventional radiologic and endoscopic evaluations of the small bowel are often limited by the length, caliber, and motility of the small bowel loops. The development of new multidetector-row CT scanners,…
MR Colonography and MR Enterography
The bowel is a common site for pathologic processes, including malignancies and inflammatory disease. Colorectal cancer accounts for 10% of all new cancers and 9% of cancer deaths. A significant…
Extracolonic Findings at CT Colonography
Computed tomographic colonography (CTC) is a validated tool for the evaluation of the colon for polyps and cancer. The technique employed for CTC includes a low-dose CT scan of the…
Finding Polyps at Colonoscopy Previously Noted on CT Colonography
Colon screening examinations have been shown to discover neoplastic lesions at an early stage. Even the most careful studies by colonoscopy and by computed tomographic colonography (CTC) can overlook tumors…
CT Colonography: Perforation Rates and Potential Radiation Risks
Computed tomographic colonography (CTC) has emerged as an alternative screening tool for colorectal cancer due to the potential to provide good efficacy combined with greater acceptability than optical colonoscopy or…
Gastroenterologists Should Read CT Colonography
Screening for colorectal neoplasms has become the standard of care in advanced medical settings worldwide. Identifying asymptomatic colorectal neoplastic lesions has been shown to reduce colorectal cancer incidence and the…
Radiologists Should Read CT Colonography
This article defines the necessary skill set and knowledge base required for accurate computed tomography colonography (CTC) interpretation. The components of the interpretative process as well as the various strategies…
Improving the Accuracy of CTC Interpretation: Computer-Aided Detection
Computer-aided polyp detection aims to improve the accuracy of the colonography interpretation. The computer searches the colonic wall to look for polyplike protrusions and presents a list of suspicious areas…
Debate: Small (6–9 mm) and Diminutive (1–5 mm) Polyps Noted on CTC: How Should They Be Managed?
New diagnostic technologies can visualize colon polyps, but not remove them. There is clear consensus that polyps 10 mm or larger need to be removed. There is still controversy surrounding…
Debate: Diminutive Polyps Noted at CT Colonography Need Not Be Reported
Colorectal polyps less than 6 mm in size pose a negligible risk to the development of colorectal carcinoma. The sensitivity and specificity for detection of diminutive lesions on all available…
