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Effective-dose estimation in interventional radiological procedures.

Maria D Falco1,2, Salvatore Masala3, Matteo Stefanini4

  • 1Department of Diagnostic Imaging, Molecular Imaging, Interventional Radiology and Radiotherapy, University of Rome Tor Vergata, 81 Viale Oxford, 00133, Rome, Italy. daniela.falco@asl2abruzzo.it.

Radiological Physics and Technology
|March 10, 2018
PubMed
Summary

Effective dose (E) estimation in interventional radiology procedures is crucial for assessing patient radiation risk. This study estimated E using dose area product (DAP) measurements, revealing significant variations across procedures.

Keywords:
Conversion coefficientsDose area productEffective doseRadiological interventional procedures

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Area of Science:

  • Medical Imaging
  • Radiology
  • Radiation Dosimetry

Background:

  • Interventional radiology utilizes minimally invasive procedures for diagnosis and treatment across various organ systems.
  • These procedures, while beneficial, contribute substantially to patient collective radiation dose.
  • Effective dose (E) is a key metric for estimating stochastic radiation risk, but immediate accurate evaluation is challenging.

Purpose of the Study:

  • To estimate the effective dose (E) for 15 selected interventional radiology procedures.
  • To analyze the relationship between dose area product (DAP) and effective dose (E) in these procedures.
  • To highlight the need for procedure classification for standardized radiation dose assessment.

Main Methods:

  • Estimation of effective dose (E) based on dose area product (DAP) measurements.
  • Utilization of case-specific conversion coefficients for E calculation.
  • Selection and analysis of 15 distinct interventional radiology procedures.

Main Results:

  • Effective dose (E) values varied widely, ranging from 3.3 to 69.9 mSv across the studied procedures.
  • The significant variation in E was primarily attributed to differences in dose area product (DAP) values.
  • DAP values were found to be dependent on the specific procedural techniques employed.

Conclusions:

  • Accurate estimation of effective dose (E) in interventional radiology is feasible using DAP measurements and conversion coefficients.
  • The substantial variability in E underscores the importance of detailed procedural characterization.
  • Standardized classification of interventional procedures is recommended for valid comparative studies and establishing universal reference levels for radiation dose.