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Related Experiment Videos

Radiation awareness program for extracorporeal shockwave lithotripsy using Medstone lithotripters

R R Ugarte1, A S Cass

  • 1Midwest Urologic Stone Unit, Minneapolis, Minnesota, USA.

Journal of Endourology
|July 11, 1998
PubMed
Summary

A radiation awareness program significantly reduced patient radiation exposure during Medstone lithotripter treatments. This initiative lowered radiation doses by 51%, improving outcomes for certain stone types.

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Area of Science:

  • Medical Physics
  • Urology
  • Radiology

Background:

  • Extracorporeal shockwave lithotripsy (SWL) utilizes X-rays for stone localization, posing radiation exposure risks to patients.
  • Medstone lithotripters are commonly used for SWL, necessitating an evaluation of radiation safety protocols.

Purpose of the Study:

  • To assess the effectiveness of a radiation awareness program in minimizing patient radiation exposure during Medstone lithotripter procedures.
  • To determine if the program impacts clinical outcomes such as stone-free rates and retreatment needs.

Main Methods:

  • Radiation exposure was calculated based on estimated entrance exposure rates at 70 cm from the X-ray tube port for each SWL treatment.
  • Data on stone characteristics and patient weight were collected, and results were disseminated to technologists and urologists.

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  • A chi-square test was employed to compare pre- and post-program radiation doses and clinical outcomes.

    • Main Results:

    • The radiation awareness program led to a 51% average reduction in calculated radiation exposure across all patient groups.
    • Statistically significant reductions in radiation exposure were observed for multiple ureteral stones (P = 0.03).
    • Significant improvements were noted in stone-free rates for single renal stones (P = 0.02), retreatment rates for single ureteral stones (P < .01), and secondary procedure rates for both single renal (P = 0.01) and ureteral stones (P = 0.05).

    Conclusions:

    • The implemented radiation awareness program effectively reduced patient radiation exposure during Medstone lithotripsy.
    • The program demonstrated a positive impact on specific clinical outcomes, suggesting its value in optimizing SWL procedures.