Mesenteric venous thrombosis: diagnosis and noninvasive imaging

Area of Science:

• Radiology
• Vascular Imaging
• Gastrointestinal Imaging

Background:

• Mesenteric venous thrombosis is a rare but life-threatening condition causing bowel ischemia.
• Accurate diagnosis is crucial for timely intervention and improved patient outcomes.
• Multiple imaging modalities exist, each with unique strengths and limitations.

Purpose of the Study:

• To review and compare the diagnostic capabilities of various imaging techniques for mesenteric venous thrombosis.
• To highlight the advantages and disadvantages of each imaging modality.
• To establish optimal imaging strategies for suspected mesenteric ischemia.

Main Methods:

• Review of Doppler ultrasonography, conventional contrast-enhanced CT, helical CT angiography, and MR imaging.
• Discussion of technical aspects, diagnostic sensitivity, and limitations of each method.
• Emphasis on multi-detector row CT and gadolinium-enhanced MR angiography for volumetric acquisitions.

Main Results:

• Doppler ultrasonography offers direct vessel evaluation but is operator-dependent and limited by bowel gas.
• Conventional CT effectively detects central venous thrombosis but suffers from motion artifacts.
• Helical CT angiography and MR angiography provide motion-free, high-resolution imaging, ideal for suspected mesenteric ischemia.

Conclusions:

• Helical CT angiography and 3D gadolinium-enhanced MR angiography are the primary diagnostic modalities for high clinical suspicion of mesenteric ischemia.
• Conventional angiography remains valuable for equivocal noninvasive findings and therapeutic interventions.
• The choice of imaging depends on clinical suspicion, available technology, and the need for therapeutic intervention.