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Related Concept Videos

Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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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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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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Imaging Studies I: Kidney, Ureter, and Bladder Studies01:28

Imaging Studies I: Kidney, Ureter, and Bladder Studies

884
Kidney, Ureter, and Bladder (KUB) StudiesKidney, Ureter, and Bladder (KUB) studies are standard diagnostic imaging procedures used to assess the anatomy of the urinary system. They are commonly utilized for patients experiencing abdominal pain or urinary symptoms. By using a simple X-ray of the abdomen, KUB studies can reveal structural and pathological abnormalities within the kidneys, ureters, and bladder. These studies are particularly valuable in diagnosing kidney stones, urinary...
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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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Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
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Related Experiment Video

Updated: May 6, 2026

Microvascular Perfusion Monitored by Laser Speckle Contrast Imaging during Renal Ischemia-Reperfusion Injury in Mice
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Perfusion imaging in renal diseases.

N Grenier1, F Cornelis, Y Le Bras

  • 1Service d'imagerie diagnostique et interventionnelle de l'adulte, Groupe Hospitalier Pellegrin-Tripode, place Amélie-Raba-Léon, 33076 Bordeaux cedex, France.

Diagnostic and Interventional Imaging
|October 19, 2013
PubMed
Summary

Magnetic resonance (MR) imaging offers flexible non-invasive kidney functional assessment, including perfusion and split renal function. While CT and sonography have limitations, MR imaging shows promise for diagnosing kidney diseases like renal artery stenosis and monitoring tumors.

Keywords:
KidneyPerfusionRenal artery stenosisRenal obstructionRenal tumors

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Area of Science:

  • Radiology
  • Nephrology
  • Medical Imaging

Background:

  • Functional kidney imaging holds significant potential for non-invasive assessment of multiple physiological parameters.
  • Current radiological techniques like CT and sonography have limitations in comprehensive functional evaluation.

Purpose of the Study:

  • To explore the capabilities of various radiological techniques for functional kidney imaging.
  • To highlight the advantages of MR imaging in assessing renal perfusion and function compared to other modalities.

Main Methods:

  • Review of functional imaging techniques for the kidney, including CT, sonography, and MR imaging.
  • Discussion of the parameters measurable by each technique, such as perfusion, glomerular filtration, blood volume, and split renal function.

Main Results:

  • CT offers perfusion and glomerular filtration measurements but involves irradiation and potential nephrotoxicity from iodine agents.
  • Sonography can evaluate perfusion, but quantification is challenging.
  • MR imaging provides the greatest flexibility, enabling measurement of blood volume, perfusion, and split renal function.

Conclusions:

  • MR imaging presents the most versatile approach for non-invasive functional kidney assessment.
  • Key applications include diagnosing vascular diseases (e.g., renal artery stenosis), obstruction, and monitoring renal tumors.
  • Further clinical validation and impact assessment are necessary for widespread adoption.