Article

Abdominal Imaging

, Volume 34, Issue 4, pp 527-540

Magnetic resonance urography

  • John R. LeyendeckerAffiliated withDepartment of Radiology, Wake Forest University School of Medicine Email author 
  • , John W. GianiniAffiliated withDepartment of Radiology, Wake Forest University School of Medicine

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Abstract

Excellent contrast resolution and lack of ionizing radiation make magnetic resonance urography (MRU) a promising technique for noninvasively evaluating the entire urinary tract. While MRU currently lags behind CT urography (CTU) in spatial resolution and efficiency, new hardware and sequence developments have contributed to a resurgence of interest in MRU techniques. By combining unenhanced sequences with multiphase contrast-enhanced and excretory phase imaging, a comprehensive assessment of the kidneys, ureters, bladder, and surrounding structures is possible with image quality rivaling that obtained with other techniques. At the same time, formidable challenges remain to be overcome and further clinical validation is necessary before MRU can replace other forms of urography. In this article, we demonstrate the current potential of MRU to demonstrate a spectrum of urologic pathology involving the kidneys, ureters, and bladder while discussing the limitations and current status of this evolving technique.

Keywords

Magnetic resonance imaging Urography Urinary system Kidney Ureters