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Related Concept Videos

Imaging Studies IV: Magnetic Resonance Imaging01:27

Imaging Studies IV: Magnetic Resonance Imaging

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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,...
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Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

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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...
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Urodynamic Studies: Uroflowmetry01:19

Urodynamic Studies: Uroflowmetry

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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...
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Imaging Studies II: Ultrasonography01:24

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...
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Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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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...
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Imaging Studies VI: Voiding Cystourethrography and Cystography01:22

Imaging Studies VI: Voiding Cystourethrography and Cystography

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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...
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Updated: Mar 18, 2026

Magnetic Resonance Imaging Assessment of Carcinogen-induced Murine Bladder Tumors
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Magnetic Resonance Urography in Obstructive Uropathy.

K K Sen1, C Mohan2, B S Verma3

  • 1Senior Advisor, Radiodiagnosis & Imaging, INHS Asvini, Colaba, Mumbai 400 005.

Medical Journal, Armed Forces India
|July 14, 2016
PubMed
Summary
This summary is machine-generated.

Magnetic resonance urography offers the highest accuracy for diagnosing urinary obstruction, a reversible cause of kidney failure. Early detection and treatment are crucial for kidney salvage.

Keywords:
Magnetic resonance urography

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Area of Science:

  • Nephrology
  • Radiology
  • Urology

Background:

  • Urinary obstruction is a reversible cause of renal failure.
  • Prompt diagnosis and intervention are key to preserving kidney function.
  • Current imaging modalities include intravenous urography, ultrasonography, computed tomography, and magnetic resonance imaging.

Purpose of the Study:

  • To evaluate and compare the accuracy of various imaging techniques in diagnosing obstructive uropathy.

Main Methods:

  • A study was conducted on 25 patients with suspected obstructive uropathy.
  • The diagnostic performance of multiple imaging modalities was assessed.

Main Results:

  • Magnetic resonance urography demonstrated the highest accuracy among the evaluated techniques.

Conclusions:

  • Magnetic resonance urography is the most accurate imaging method for obstructive uropathy.
  • This finding supports the use of MRI in the early diagnosis and management of kidney obstruction.