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Patient and occupational dose in neurointerventional procedures
G J Kemerink1, M J Frantzen, K Oei
1Department of Radiology, University Hospital Maastricht, P. Debijelaan 25, 6229HX Maastricht, The Netherlands. gkk@rdia.azm.nl
Neuroradiology
|June 19, 2002
Summary
This study quantified radiation exposure during neurointerventional procedures. Patient doses were within safe limits, and occupational exposure for staff was minimal, highlighting opportunities for dose optimization.
Area of Science:
- Radiology
- Medical Physics
- Interventional Neuroradiology
Background:
- Neurointerventional procedures utilize high radiation doses.
- Patient and staff radiation exposure requires careful monitoring and optimization.
Purpose of the Study:
- Quantify patient and worker radiation exposure during neurointerventional procedures.
- Utilize exposure data for optimizing radiation safety protocols.
Main Methods:
- Measured patient entrance doses using thermoluminescent dosemeters.
- Recorded dose-area product (DAP), fluoroscopy time, and imaging parameters.
- Monitored worker entrance doses at various body sites.
Main Results:
- Highest patient entrance dose was 2.3 Gy; average was 0.9 Gy.
- Average patient effective dose was 14.0 mSv.
- Highest operator entrance dose was on the leg (235 μGy); average effective dose was 6.7 μSv.
Conclusions:
- Patient radiation doses were generally within acceptable ranges for avoiding nonstochastic effects.
- Neurointerventional procedures contribute minimally to occupational radiation dose.
- Ongoing optimization of machine settings and protocols can further reduce patient exposure.