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Related Concept Videos

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 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 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 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 III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

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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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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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Non-fluoroscopic Catheter Tracking for Fluoroscopy Reduction in Interventional Electrophysiology
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Can operator-controlled imaging reduce fluoroscopy time during flexible ureterorenoscopy?

Michaël M E L Henderickx1, Tim Brits2, Natalia S Zabegalina2

  • 1Department of Urology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.

Central European Journal of Urology
|May 20, 2022
PubMed
Summary

Operator-controlled imaging during flexible ureterorenoscopy significantly reduces fluoroscopy time compared to radiographer-controlled imaging. This approach enhances urologist independence and minimizes radiation exposure for patients and staff.

Keywords:
ALARA-principleendourologyfluoroscopyradiation exposureureterorenoscopy

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Area of Science:

  • Urology
  • Medical Imaging
  • Radiation Safety

Background:

  • Fluoroscopy is standard in ureterorenoscopy (URS).
  • The As Low As Reasonably Achievable (ALARA) principle mandates minimizing radiation exposure.
  • Reducing fluoroscopy time is crucial for patient and staff safety.

Purpose of the Study:

  • To compare fluoroscopy time between operator-controlled and radiographer-controlled imaging during flexible URS for nephrolithiasis.
  • To evaluate the impact of imaging control on radiation exposure.

Main Methods:

  • Bicentric, retrospective study of 100 patients undergoing flexible URS for nephrolithiasis.
  • Comparison of two groups: operator-controlled imaging (n=50) vs. radiographer-controlled imaging (n=50).
  • Inclusion criteria: total stone burden <20 mm; data on radiation exposure available. Patient and stone characteristics, surgical details, and fluoroscopy time were recorded.

Main Results:

  • No significant differences in patient or stone characteristics between groups.
  • Operator-controlled imaging group had significantly shorter fluoroscopy time (33.5 seconds) compared to the radiographer-controlled group (57.0 seconds) (p=0.001).

Conclusions:

  • Operator-controlled imaging during flexible URS can significantly reduce fluoroscopy time.
  • This method may increase urologist independence and decrease radiation risks for patients and medical personnel.