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Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

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MR urography: techniques and clinical applications.

John R Leyendecker¹, Craig E Barnes, Ronald J Zagoria

¹Department of Radiology, Wake Forest University School of Medicine, Medical Center Blvd, Winston-Salem, NC 27157, USA. jleyende@wfubmc.edu

Radiographics : a Review Publication of the Radiological Society of North America, Inc

|January 22, 2008

Summary

This summary is machine-generated.

Magnetic resonance (MR) urography offers noninvasive urinary tract evaluation, useful for obstruction, hematuria, and anomalies. It includes static-fluid and excretory techniques, beneficial when avoiding radiation.

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Area of Science:

Radiology
Medical Imaging

Background:

Magnetic resonance (MR) urography is an evolving noninvasive imaging technique.
It is valuable for evaluating urinary tract abnormalities, especially when radiation is a concern.

Purpose of the Study:

To outline the clinical utility and techniques of MR urography.
To describe static-fluid and excretory MR urography methods and their applications.

Main Methods:

Utilizes heavily T2-weighted sequences for static-fluid MR urography.
Employs excretory phase enhancement with gadolinium contrast for excretory MR urography.
May incorporate diuretic administration for enhanced visualization.

Main Results:

Static-fluid MR urography excels in dilated or obstructed systems, with cine sequences aiding ureteral assessment.
Excretory MR urography, aided by diuretics, is effective for nondilated systems in patients with adequate renal function.
Combining techniques with conventional MR imaging provides comprehensive evaluation.

Conclusions:

MR urography is a versatile tool for diagnosing urinary tract issues in various patient populations.
Understanding MR urographic techniques and potential pitfalls is crucial for accurate interpretation.