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CT and MR Enterography for Small-Bowel Disorders
Elizabeth Adams, MPH*
*Medical Writer, Elizabeth Adams Consulting, LLC
Address correspondence to: Elizabeth Adams, MPH. Email: firstname.lastname@example.org.
Disclosure statement: Ms Adams reports having no financial or advisory relationships with corporate or professional organizations related to this activity.
Diseases of the small bowel can be challenging to diagnose. The symptoms of many small bowel conditions are similar, and conventional endoscopic procedures cannot visualize most areas of the small bowel or identify complications outside of the bowel wall. Conventional cross-sectional imaging often lacks sufficient sensitivity to identify important changes within the lumen and adjacent structures.
Complete assessment of the small bowel requires high-resolution scanning of the entire length of the bowel and neighboring mesentery. Enterography combines multidetector computed tomography (CT) and magnetic resonance imaging (MRI) with oral and intravenous contrast to enhance intraluminal and adjacent bowel structures. The improved enhancement provides information with superior detail to permit a more accurate diagnosis. Inflammatory bowel disease and gastrointestinal bleeding are common indications for enterography, particularly when endoscopic results are negative or inconclusive.
CT enterography (CTE) and MR enterography (MRE) are changing the way small-bowel pathology is diagnosed and treated. Choice of enterographic technique will depend on a number of patient, technical, and provider factors. Underlying the decision is the principle of producing images with sufficient diagnostic quality at the lowest possible radiation dose. Patient tolerance and acuity, the target of interest, and desire to limit exposure to ionizing radiation influence decision-making, but local preferences and availability play important roles. The radiologic technologist plays an integral role in carrying out the procedure in a way that adheres to this principle. This course will provide an overview of small-bowel anatomy, CTE, MRE, and their most common clinical applications.
Full Course Content available to active members of eRADIMAGING.com
* This sample course is for reference purposes only. It is not currently available for earning CE credits. To earn ARRT CE credits please subscribe to eRADIMAGING where you will see a complete listing of all active and eligible CE courses.