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Imaging Studies IV: Magnetic Resonance Imaging

Imaging Studies IV: Magnetic Resonance Imaging

Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

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Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...

Imaging Studies II: Ultrasonography

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IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...

Imaging Studies I: Kidney, Ureter, and Bladder Studies

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Related Experiment Video

Updated: Jun 26, 2026

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Published on: August 14, 2019

[Functional MR urography in children].

P H Vivier¹, E Blondiaux, M Dolores

¹Service de Radiologie, CHU C. Nicolle, 1, rue de Germont, 76031 Rouen Cedex, France.

Journal De Radiologie

|February 3, 2009

Summary

This summary is machine-generated.

Magnetic Resonance Urography (MRU) offers detailed imaging for pediatric urinary tract obstruction without radiation. It assesses kidney function and obstruction, complementing other methods.

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An Immature Murine Model of Reversible Unilateral Ureteral Obstruction

An Immature Murine Model of Reversible Unilateral Ureteral Obstruction

Published on: April 4, 2025

Area of Science:

Radiology
Pediatric Nephrology
Medical Imaging

Background:

Pediatric obstructive uropathies require accurate assessment of renal function and obstruction.
Conventional imaging methods like intravenous urography involve radiation exposure.
Ultrasonography is a common initial imaging modality but has limitations.

Purpose of the Study:

To highlight the benefits of MR Urography (MRU) in evaluating pediatric obstructive uropathies.
To emphasize MRU's ability to provide both morphologic and functional data.
To compare MRU with other imaging techniques in this patient population.

Main Methods:

MR Urography (MRU) utilizes magnetic resonance imaging to visualize the urinary tract.
MRU assesses morphologic features, split renal function, and excretion.
Quantification of urinary tract obstruction is performed using MRU.

Main Results:

MRU provides comprehensive morphologic and functional information.
It allows for accurate assessment of split renal function and excretion.
MRU effectively quantifies the degree of obstruction.

Conclusions:

MR Urography is a valuable, non-invasive tool for pediatric obstructive uropathies.
It complements ultrasonography by providing functional assessment without radiation.
MRU is preferred over intravenous urography when available.