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Related Experiment Videos

Radiation doses to patients during ERCP.

C J Larkin1, A Workman, R E Wright

  • 1Royal Victoria Hospital, Belfast, Northern Ireland.

Gastrointestinal Endoscopy
|February 15, 2001
PubMed
Summary

Therapeutic ERCP involves higher radiation exposure than diagnostic ERCP. Effective dose (ED) during therapeutic procedures is primarily due to longer fluoroscopy times, not the number of images taken.

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Area of Science:

  • Medical Imaging
  • Radiation Oncology
  • Gastroenterology

Background:

  • Limited data exists on patient radiation dose during Endoscopic Retrograde Cholangiopancreatography (ERCP).
  • Dose Area Product (DAP) measurements can estimate effective dose (ED) and quantify radiation risks in ERCP.
  • Evaluating ED in ERCP is crucial for patient safety and risk management.

Purpose of the Study:

  • To assess the effective dose (ED) to patients undergoing ERCP procedures.
  • To quantify radiation exposure associated with diagnostic and therapeutic ERCP.
  • To identify factors contributing to radiation dose in ERCP.

Main Methods:

  • Dose Area Product (DAP) meters were used to record radiation exposure during ERCP.
  • Fluoroscopy time, screening parameters, and image counts were systematically recorded.
  • Monte Carlo computer software modeled radiation exposure to estimate effective dose (ED).

Main Results:

  • Therapeutic ERCP yielded significantly higher average DAP (66.8 Gy-cm²) and fluoroscopy time (10.5 min) than diagnostic ERCP (13.5 Gy-cm², 2.3 min).
  • A strong linear relationship (R² = 0.928) was observed between DAP and fluoroscopy time.
  • Average ED was 3.1 mSv for diagnostic ERCP and 12.4 mSv for therapeutic ERCP.

Conclusions:

  • Therapeutic ERCP is associated with substantially higher radiation exposure compared to diagnostic ERCP.
  • Fluoroscopy time is the primary determinant of effective dose (ED) in therapeutic ERCP, outweighing the number of films.
  • These findings highlight the need for radiation dose optimization strategies in therapeutic ERCP.

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