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Patient dosimetry in interventional radiology using slow films
E Vañó1, E Guibelalde, J M Fernández
1Department of Radiology, University Complutense of Madrid, Spain.
The British Journal of Radiology
|February 1, 1997
Summary
This study introduces a cost-effective slow film method for evaluating patient doses in interventional radiology. This technique accurately estimates dose area product and skin dose, aiding procedure optimization.
Area of Science:
- Medical Physics
- Radiology
- Radiation Dosimetry
Background:
- Accurate patient dosimetry is crucial for interventional radiology procedures.
- Existing dose-area measuring devices may not be available on all X-ray equipment.
- Radiotherapy films offer a potential medium for dose evaluation.
Purpose of the Study:
- To present and discuss a method for evaluating patient doses in interventional radiology using slow non-screen films.
- To assess the accuracy and cost-effectiveness of this film-based dosimetry method.
- To explore additional information obtainable from the films for procedure optimization.
Main Methods:
- Analysis of slow non-screen films, similar to those used in radiotherapy.
- Estimation of dose area product and patient skin dose from film analysis.
- Comparison of film method results with Diamentor measurements after corrections.
Main Results:
- The slow film method provides fair accuracy in estimating dose area product and patient skin dose.
- Agreement between the slow film method and Diamentor measurements is within 5% after corrections.
- The method is cost-effective at approximately 5 pounds per film.
Conclusions:
- Slow non-screen films offer a viable and affordable option for patient dosimetry in interventional radiology.
- This method is particularly valuable for equipment lacking integrated dose-area measuring devices.
- Film analysis yields additional data for optimizing procedures, including irradiated areas and beam collimation.