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Obscure gastrointestinal bleeding: evaluation with 64-section multiphase CT enterography--initial experience

James E Huprich1, Joel G Fletcher, Jeffrey A Alexander

  • 1Department of Radiology, Mayo Clinic, 200 First Ave SW, Rochester, MN 55905, USA. huprich@mayo.edu

Radiology
|January 30, 2008
PubMed

Insights

Computed tomographic (CT) enterography effectively identifies bleeding sources in obscure gastrointestinal bleeding (OGIB). This imaging technique aids in detecting lesions missed by capsule endoscopy, improving diagnostic accuracy for OGIB.

Area of Science:

  • Radiology
  • Gastroenterology

Background:

  • Obscure gastrointestinal bleeding (OGIB) presents a diagnostic challenge.
  • Conventional endoscopic methods may not always identify the bleeding source.

Purpose of the Study:

  • To retrospectively evaluate computed tomographic (CT) enterography for diagnosing OGIB.
  • To assess the utility of a 64-section CT system with neutral enteric contrast and three-phase acquisition.

Main Methods:

  • Retrospective analysis of 22 patients with OGIB who underwent CT enterography.
  • Comparison of CT enterography findings with capsule endoscopy, traditional endoscopy, surgery, and angiography.
  • Utilized a 64-section CT system with neutral enteric contrast and a three-phase acquisition protocol.

Main Results:

  • CT enterography identified a bleeding source in 10 out of 22 patients (45%).
  • Eight of these positive findings correlated with capsule endoscopy or clinical diagnosis.
  • CT enterography detected three lesions missed by capsule endoscopy.

Conclusions:

  • Multiphase, multiplanar CT enterography shows promise in evaluating OGIB.
  • CT enterography can be a valuable tool for identifying gastrointestinal bleeding sources.
  • This technique may improve diagnostic yield in challenging OGIB cases.

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