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Radiation doses to patients in neurointerventional procedures
1Department of Radiology, Hôpital Notre Dame, Montréal, Québec, Canada.
AJNR. American Journal of Neuroradiology
|November 1, 1994
Summary
Neurointerventional procedures pose minimal radiation risk to patients. Both deterministic effects and stochastic risks, such as fatal cancer, were found to be very low in this study.
Area of Science:
- Radiology
- Medical Physics
- Neurointerventional Radiology
Background:
- Neurointerventional procedures are increasingly common for treating cerebrovascular diseases.
- Assessing patient radiation exposure is crucial for risk-benefit analysis.
Purpose of the Study:
- To evaluate the stochastic and deterministic radiation risks for patients undergoing neurointerventional procedures.
- To quantify patient dosimetry, including entrance skin dose and effective dose.
Main Methods:
- Eight neurovascular interventional procedures were analyzed.
- Patient dosimetry was performed using thermoluminescence dosimeters.
- Maximum entrance skin dose and effective dose were determined.
Main Results:
- Maximum entrance skin dose ranged from 129 to 1335 mGy.
- Mean effective dose was 1.67 mSv (0.44–3.44 mSv).
- No deterministic effects were observed; stochastic risk was low (approx. 1 in 6000 fatal cancers per procedure).
Conclusions:
- Radiation hazard to patients undergoing neurointerventional procedures is minimal.
- The low observed risks suggest radiation is a minor factor in procedure decision-making.