Noninvasive radiologic imaging of the large intestine: a valuable complement to optical colonoscopy

作者：Pickhardt Perry J^*

来源：Current Opinion in Gastroenterology, 2010, 26(1): 61-68.

DOI：10.1097/MOG.0b013e328332b835

• colorectal cancer
• computed tomography colonography
• inflammatory bowel disease
• MRI
• PET imaging

Purpose of review
Radiologic imaging of the large intestine continues to evolve and expand the potential for noninvasive diagnosis. The aim of this review is to provide an update on current and emerging clinical capabilities for a variety of radiologic diagnostic imaging tools for evaluating the colon and rectum.
Recent findings
The utility of computed tomography for the evaluation of symptomatic inflammatory and neoplastic conditions of the colon is well established, but the clinical role of computed tomography colonography is rapidly evolving. In addition to a number of diagnostic indications, computed tomography colonography is emerging as a potential frontline colorectal screening test for cancer prevention. MRI has become increasingly valuable for rectal cancer staging and inflammatory bowel disease but has yet to gain momentum for polyp evaluation. PET imaging has been primarily utilized for oncologic indications, but also holds considerable potential for inflammatory conditions. Other imaging modalities, such as the barium enema, conventional radiography, and ultrasound, play a much more limited role.
Summary
Advances in radiologic imaging of the colorecturm will continue to expand the capabilities and clinical indications for noninvasive diagnosis, allowing for a greater emphasis on the complementary roles of tissue sampling and therapy with optical colonoscopy.

• 出版日期2010-1