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Update on MR urography (MRU): technique and clinical applications
Jorge Abreu-Gomez1, Amar Udare1, Krishna P Shanbhogue2
1Department of Medical Imaging, The Ottawa Hospital, The University of Ottawa, Ottawa, ON, Canada.
Abdominal Radiology (New York)
|June 3, 2019
Summary
Magnetic Resonance Urography (MRU) offers comprehensive urinary system imaging with excellent soft tissue detail. While technically demanding, advances improve MRU efficiency and patient tolerance for detecting non-calculous diseases.
Area of Science:
- Radiology
- Medical Imaging
Background:
- Magnetic Resonance Urography (MRU) visualizes the upper urinary tract.
- CT Urography (CTU) is a common imaging modality for the urinary system.
Purpose of the Study:
- To review updates in MRU techniques.
- To summarize clinical indications and opportunities for MRU.
- To compare MRU advantages and disadvantages against CTU.
Main Methods:
- Review of recent advancements in MR imaging techniques (parallel imaging, motion compensation, compressed sensing).
- Comparison of MRU performance against CTU for upper tract visualization and disease detection.
- Discussion of clinical applications and patient considerations for MRU.
Main Results:
- MRU provides similar visualization and specificity for non-calculous diseases compared to CTU, but with lower sensitivity.
- MRU offers superior soft tissue resolution and comprehensive urinary system assessment.
- New MR techniques can shorten scan times and improve image quality and patient tolerance.
Conclusions:
- MRU is a valuable tool for comprehensive urinary system evaluation, especially for non-calculous diseases.
- Technical advancements are enhancing MRU's efficiency and applicability.
- MRU presents a viable alternative to CTU with distinct advantages in soft tissue characterization.
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