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MRI manifestations of gastrointestinal wall thickening

C K Chou1, L T Chen, R S Sheu

  • 1Department of Radiology, Kaohsiung Medical College, Taiwan, Republic of China.

Abdominal Imaging
|September 1, 1994
PubMed

Insights

Magnetic resonance imaging (MRI) effectively visualizes gastrointestinal wall thickening from various conditions. Air contrast enhances the detection of abnormal thickening, aiding diagnosis.

Area of Science:

  • Gastrointestinal Radiology
  • Abdominal Imaging
  • Medical Imaging Techniques

Background:

  • Gastrointestinal wall thickening on imaging can indicate numerous pathologies.
  • Accurate differentiation of these entities is crucial for patient management.

Purpose of the Study:

  • To demonstrate the appearance of various gastrointestinal wall thickening entities using magnetic resonance imaging (MRI).
  • To highlight the utility of intraluminal air as a contrast agent in MRI for visualizing bowel abnormalities.

Main Methods:

  • Utilized magnetic resonance imaging (MRI) with intraluminal air (antegrade or retrograde) as a contrast agent.
  • Analyzed the visualization of normal versus abnormal focal or segmental wall thickening.
  • Coronal and sagittal views were assessed for improved demonstration of thickening.
  • Evaluated the low-signal intensity muscular layer and its potential interruption by tumor invasion.

Main Results:

  • Normal bowel walls were barely visible or invisible when distended with air.
  • Abnormal focal or segmental wall thickening was clearly outlined between intraluminal air and extraluminal fat.
  • The low-signal intensity muscular layer was delineated, and its interruption suggested tumor invasion.

Conclusions:

  • MRI with air contrast is effective for demonstrating gastrointestinal wall thickening from diverse causes.
  • Air distension improves the conspicuity of abnormal wall thickening and aids in assessing mural invasion.

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