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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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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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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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Meaning of Cystoscopic Examination:Cystoscopy is an essential diagnostic tool in urology that is used to assess the structure and function of the genitourinary system. It provides a direct view of the urethra, bladder, and, in some cases, the ureteral openings. This procedure helps detect structural abnormalities, infections, cancers, and blockages in the urinary tract. There are two types of cystoscopy:Flexible cystoscopy is commonly performed in outpatient settings due to its less invasive...
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Single Pulse-per-second Setting Reduces Fluoroscopy Time During Ureteroscopy.

Todd S Yecies1, Anisleidy Fombona2, Michelle J Semins1

  • 1Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, PA.

Urology
|January 28, 2017
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Summary
This summary is machine-generated.

Single pulse-per-second (pps) fluoroscopy significantly reduces fluoroscopy time and surgeon radiation exposure during ureteroscopy. This method is feasible and lowers exposure by 64% without impacting procedure duration.

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Area of Science:

  • Urology
  • Medical Imaging
  • Radiation Safety

Background:

  • Ureteroscopy often involves fluoroscopic guidance, leading to significant radiation exposure for surgeons.
  • Optimizing fluoroscopy techniques is crucial for minimizing occupational hazards in urological procedures.

Purpose of the Study:

  • To assess the impact of 1 pulse-per-second (pps) fluoroscopy on fluoroscopy duration and surgeon radiation dose during ureteroscopy.
  • To determine the feasibility and effectiveness of low-dose 1 pps fluoroscopy in a clinical setting.

Main Methods:

  • A retrospective review of 154 ureteroscopy cases (84 continuous, 70 1 pps fluoroscopy) was conducted over 12 months.
  • Surgeon radiation exposure was monitored using torso and chest dosimeters.
  • Fluoroscopy settings were switched from continuous low-dose to 1 pps low-dose at the 6-month mark.

Main Results:

  • The median fluoroscopy time decreased from 77 to 16 seconds with 1 pps fluoroscopy (P < .001).
  • Surgeon radiation exposure (deep, lens, and shallow dose equivalents) was reduced by 64% (P values ranging from .10 to .11).
  • No significant differences were observed in patient demographics, stone burden, or procedure duration between groups, although the 1 pps cohort had a larger median stone burden.

Conclusions:

  • Single pulse-per-second fluoroscopy is a feasible technique for ureteroscopy.
  • Implementing 1 pps fluoroscopy significantly reduces both fluoroscopy time and surgeon radiation exposure.
  • This technique offers a substantial improvement in radiation safety for urologists without compromising procedure efficiency.