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Related Concept Videos

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

Imaging Studies I: Kidney, Ureter, and Bladder Studies

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...
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...
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 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...
Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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...
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...

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Related Experiment Video

Updated: May 29, 2026

Technical Modification of the Terminal Ureter During Total Transperitoneal Laparoscopic Nephroureterectomy for Upper Urinary Tract Urothelial Carcinoma
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Technical Modification of the Terminal Ureter During Total Transperitoneal Laparoscopic Nephroureterectomy for Upper Urinary Tract Urothelial Carcinoma

Published on: November 22, 2019

Factors determining fluoroscopy time during ureteroscopy.

Philippe D Violette1, Konrad M Szymanski, Maurice Anidjar

  • 1Division of Urology, McGill University Health Centre, Montreal, Quebec, Canada.

Journal of Endourology
|September 13, 2011
PubMed
Summary
This summary is machine-generated.

Radiation exposure during ureteroscopy is predicted by surgeon behavior, longer surgery times, and male gender. Stone characteristics did not influence fluoroscopy time (FT) in this study.

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Unilateral Ureteral Obstruction Model for Investigating Kidney Interstitial Fibrosis
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Area of Science:

  • Urology
  • Medical Imaging
  • Radiation Safety

Background:

  • Ureteroscopy is a common procedure for kidney stone treatment.
  • Minimizing radiation exposure during ureteroscopy is crucial for patient safety.

Purpose of the Study:

  • To prospectively identify predictors of radiation exposure during ureteroscopy.
  • To determine factors influencing fluoroscopy time (FT) in patients undergoing ureteroscopy.

Main Methods:

  • Seventy-six patients undergoing ureteroscopy with laser lithotripsy were analyzed.
  • Fluoroscopy time (FT) and clinical data were collected.
  • Univariate and multivariate linear regression models were used to identify predictors of FT.

Main Results:

  • Increased FT was independently associated with specific surgeon (Surgeon A), longer surgical duration, and male gender.
  • Mean FT was 183 seconds; mean surgical time was 68.4 minutes.
  • Stone characteristics, age, and presence of a ureteral stent did not correlate with FT.

Conclusions:

  • Surgeon practice, prolonged surgery, and male sex are significant predictors of radiation exposure during ureteroscopy.
  • Stone characteristics are not predictors of FT in this patient cohort.
  • Findings emphasize the importance of surgeon technique and patient factors in radiation dose management.