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Advances in abdominal MR imaging

J T Ferrucci1

  • 1Department of Radiology, Boston University School of Medicine, Boston Medical Center, MA 02118, USA.

Radiographics : a Review Publication of the Radiological Society of North America, Inc
|November 20, 1998
PubMed
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Recent MR imaging advances improve abdominal disease evaluation. New RARE sequences and liver-specific contrast agents enhance hepatic lesion detection, while MRCP offers a competitive alternative for ductal imaging.

Area of Science:

  • Radiology
  • Medical Imaging
  • Gastroenterology

Background:

  • Magnetic Resonance (MR) imaging has seen significant technical advancements, increasing its utility in diagnosing abdominal conditions.
  • Conventional spin-echo imaging is being surpassed by faster techniques like RARE (Rapid Acquisition Relaxation Enhancement) for T2-weighted imaging.

Purpose of the Study:

  • To review the major technical advances in MR imaging for abdominal disease evaluation.
  • To highlight the impact of new pulse sequences, contrast agents, and coil technology on diagnostic capabilities.

Main Methods:

  • Review of RARE pulse sequences (multishot and single-shot) for T2-weighted imaging.
  • Discussion of newly approved liver-specific contrast agents (SPIO particles, mangafodipir trisodium).
  • Evaluation of MR hydrography (including MRCP), MR vascular imaging, and advanced coil applications.

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Main Results:

  • RARE sequences achieve comparable diagnostic quality to conventional methods with reduced acquisition times.
  • Liver-specific contrast agents significantly improve hepatic lesion detection and characterization.
  • MRCP emerges as a strong, non-invasive alternative to ERCP for biliary and pancreatic duct imaging.
  • Advanced MR techniques show promise in evaluating perirectal diseases and portal venous system.

Conclusions:

  • Technical progress in MR imaging has established its role in specific abdominal diagnostic niches.
  • MR imaging offers valuable, non-invasive alternatives for evaluating hepatic, pancreatic, biliary, and perirectal diseases.
  • Future developments in MR interventional techniques and functional imaging promise further expansion of its clinical applications.