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Preliminary clinical application of contrast-enhanced MR portography

L Yang1, X Kong, D Liu

  • 1Department of Radiology, Xiehe Hospital, Tongji Medical University, Wuhan 430022.

Journal of Tongji Medical University = Tong Ji Yi Ke Da Xue Xue Bao
|August 27, 2003
PubMed

Insights

Contrast enhanced MR portography accurately evaluates the portal venous system. This noninvasive technique aids in assessing conditions like portal hypertension and liver cancer before procedures.

Area of Science:

  • Radiology
  • Medical Imaging
  • Vascular Imaging

Background:

  • Portal venous system evaluation is crucial for diagnosing conditions like portal hypertension and liver cancer.
  • Traditional imaging methods may have limitations in visualizing the entire portal venous network and associated pathologies.

Purpose of the Study:

  • To evaluate the clinical application and diagnostic accuracy of contrast-enhanced (CE) MR portography.
  • To assess the utility of three-dimensional (3D) CE MR portography in visualizing the portal venous system and detecting abnormalities.

Main Methods:

  • Sixty-six CE MR portograms were acquired using a fast imaging with steady procession (FISP) technique on a 1.5-T MRI scanner.
  • A maximum intensity projection (MIP) algorithm was used to create composite images of the entire portal venous system.
  • The study included normal controls, patients with portal hypertension (pre- and post-operative), and patients with liver carcinoma.

Main Results:

  • All CE MR portograms were of diagnostic quality, visualizing the main portal vein and its intrahepatic branches.
  • Significantly larger portal vein diameters were observed in portal hypertension patients compared to controls.
  • The technique successfully identified varices, portal vein occlusion, compression, dislocation, and other related pathologies in various patient groups.

Conclusions:

  • Three-dimensional CE MR portography is an accurate and reliable noninvasive technique for evaluating the portal venous system.
  • It provides essential information for pre-procedural assessment in patients undergoing TIPSS or liver transplantation.
  • CE MR portography demonstrates high diagnostic value in detecting and characterizing portal venous abnormalities.

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