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CT enterography: technical and interpretive pitfalls.

John M Barlow1, Brian C Goss, Stephanie L Hansel

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Summary
This summary is machine-generated.

Computed tomography (CT) enterography is a key test for small bowel disorders. This review details its limitations and pitfalls, offering strategies to enhance diagnostic accuracy with complementary imaging techniques.

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Area of Science:

  • Radiology
  • Gastroenterology
  • Medical Imaging

Background:

  • Computed tomography (CT) enterography is a primary diagnostic tool for various small bowel conditions.
  • Existing literature often emphasizes CT enterography's diagnostic capabilities for Crohn's disease, neoplasia, and vascular/malabsorptive disorders.

Purpose of the Study:

  • To comprehensively review the limitations, technical and interpretive pitfalls, and image review strategies for CT enterography.
  • To discuss complementary radiologic and endoscopic examinations for improving diagnostic accuracy in small bowel imaging.

Main Methods:

  • Review of existing literature on CT enterography for small bowel disorders.
  • Analysis of common technical and interpretive challenges in CT enterography.
  • Identification of alternative and complementary imaging modalities.

Main Results:

  • CT enterography has limitations, including inability to detect isolated mucosal abnormalities and use of ionizing radiation.
  • Common technical pitfalls include inadequate small bowel distention and collapsed jejunal segments.
  • Interpretive pitfalls involve peristalsis, intussusception, and intraluminal debris, potentially leading to false negatives.

Conclusions:

  • Properly performed and interpreted CT enterography is valuable for diagnosing and managing small bowel diseases.
  • Complementary examinations like MR enterography and capsule endoscopy can enhance diagnostic accuracy.
  • Understanding CT enterography's limitations is crucial for optimizing its use in small bowel evaluation.