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Related Concept Videos

Imaging Studies IV: Magnetic Resonance Imaging01:27

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 Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

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...
Urodynamic Studies: Uroflowmetry01:19

Urodynamic Studies: Uroflowmetry

Uroflowmetry is a non-invasive urodynamic test designed to measure various aspects of urination, including volume, flow rate, and the time to void. This test is crucial for diagnosing and assessing conditions such as bladder outlet obstruction, bladder dysfunction, incomplete bladder emptying, incontinence, and urinary tract blockages caused by benign prostatic hyperplasia (BPH) and urethral strictures.Pre-Test Instructions:Before a uroflowmetry test, patients are typically advised to drink...
Imaging Studies VI: Voiding Cystourethrography and Cystography01:22

Imaging Studies VI: Voiding Cystourethrography and Cystography

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...

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Whole-body PET/MRI of Pediatric Patients: The Details That Matter
10:02

Whole-body PET/MRI of Pediatric Patients: The Details That Matter

Published on: December 19, 2017

Pediatric magnetic resonance urography.

Richard A Jones1, J Damien Grattan-Smith, Stephen Little

  • 1Department of Radiology, Children's Healthcare of Atlanta, Atlanta, Georgia 30342, USA. Richard.Jones@choa.org

Journal of Magnetic Resonance Imaging : JMRI
|May 13, 2011
PubMed
Summary
This summary is machine-generated.

Magnetic resonance urography (MRU) offers detailed kidney imaging without radiation. This technique aids in diagnosing hydronephrosis, identifying uropathy, and assessing renal scarring, with potential prognostic value for surgical planning.

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Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure
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Area of Science:

  • Radiology
  • Pediatric Nephrology
  • Medical Imaging

Background:

  • Magnetic resonance urography (MRU) is a non-ionizing radiation imaging modality.
  • It combines anatomical and functional data for comprehensive renal tract evaluation.
  • MRU is particularly valuable in pediatric cases where radiation exposure is a concern.

Purpose of the Study:

  • To provide an overview of MRU's technical aspects and clinical applications.
  • To emphasize MRU's role in evaluating hydronephrosis and its prognostic implications.
  • To highlight MRU's utility in identifying uropathy, renal scarring, and congenital abnormalities.

Main Methods:

  • Utilizing a standardized MRU protocol including a fluid challenge.
  • Acquiring both anatomical and dynamic imaging sequences.
  • Correlating imaging findings with clinical context and potential surgical considerations.

Main Results:

  • A fluid challenge effectively classifies kidneys as compensated or decompensated within the hydronephrosis spectrum.
  • MRU identifies underlying uropathy and visualizes renal scarring on anatomical and dynamic scans.
  • MRU can characterize dysmorphic kidneys and congenital abnormalities associated with vesicoureteric reflux.

Conclusions:

  • MRU is a powerful tool for evaluating hydronephrosis, offering prognostic insights for surgical planning.
  • It effectively diagnoses uropathy, renal scarring, and congenital anomalies without ionizing radiation.
  • As MRU technology advances, it is poised to become the preferred method for pediatric renal tract disorder assessment.