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Related Concept Videos

Imaging Studies I: Kidney, Ureter, and Bladder Studies01:28

Imaging Studies I: Kidney, Ureter, and Bladder Studies

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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 II: Ultrasonography01:24

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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

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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 VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

176
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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Related Experiment Video

Updated: Dec 13, 2025

Author Spotlight: Developing a Bedside Protocol for Kidney and Genitourinary Ultrasonography
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Measuring volumetric segmentation changes in the ipsilateral and contralateral kidney postpartial nephrectomy.

Alp Tuna Beksac1, Kennedy E Okhawere1, Amr A Elbakry1

  • 1Department of Urology, Icahn School of Medicine at Mount Sinai, New York City, NY.

Urologic Oncology
|August 3, 2020
PubMed
Summary
This summary is machine-generated.

Partial nephrectomy leads to kidney volume loss, influenced by warm ischemia time and tumor complexity. This parenchymal volume loss impacts kidney function and contralateral kidney growth.

Keywords:
Contralateral HypertrophyFunctional OutcomeKidney VolumePartial NephrectomyWarm Ischemia Time

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Area of Science:

  • Nephrology
  • Urology
  • Medical Imaging

Background:

  • Partial nephrectomy is a standard treatment for renal tumors.
  • Assessing post-operative kidney function and structural changes is crucial for patient outcomes.

Purpose of the Study:

  • To analyze volumetric changes in kidneys after partial nephrectomy.
  • To determine the impact of these changes on kidney function.
  • To investigate the relationship between parenchymal volume loss and surgical factors.

Main Methods:

  • Retrospective analysis of 119 partial nephrectomy patients.
  • Semiautomated segmentation for volumetric measurements.
  • Linear regression models to assess predictors of parenchymal volume loss (PVL) and its effect on eGFR.

Main Results:

  • Mean kidney volume loss was 16.99%.
  • Warm ischemia time (WIT) and tumor complexity significantly predicted PVL.
  • PVL and male gender were associated with changes in estimated Glomerular Filtration Rate (eGFR).
  • % volume loss predicted contralateral hypertrophy.

Conclusions:

  • Tumor complexity increases WIT and PVL.
  • PVL is a key factor affecting kidney function and is linked to WIT.
  • Increased PVL is associated with reduced contralateral hypertrophy, suggesting a complex interplay in renal adaptation.