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Article Dans Une Revue Radiation Protection Dosimetry Année : 2017

Impact of the calibration conditions of XR-RV3 films on peak skin dose measurements in interventional radiology

Résumé

In this study, the impact of radiochromic films (XR-RV3) calibration on PSD measurements was investigated under various peak kilovoltage (kVp) and additional filtration conditions. Films were calibrated free-in-air for six beam qualities with Allura Xper FD20 system (Philips). Six calibration curves (CCs) were constructed. Each beam quality was characterized in terms of mean energy (ME) in the air, with table, with table and water phantom using Monte Carlo simulations. A cohort of 155 patient films from cardiology (37) and vascular (118) procedures were read with each CC. Routine calibration beam quality was taken as reference (DoseNorm). Overall, it was observed that for a wider ME difference between the exposed film and the CC used, a larger deviation (from -28% to +41%) was observed. The choice of beam quality for the calibration is a key point when additional filtration and kVp are automatically controlled in clinical conditions.
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Dates et versions

hal-01878993 , version 1 (15-10-2019)

Identifiants

Citer

J. Greffier, C. van Ngoc Ty, Mathieu Agelou, J. Coulot, B. Ledermann, et al.. Impact of the calibration conditions of XR-RV3 films on peak skin dose measurements in interventional radiology. Radiation Protection Dosimetry, 2017, 174 (2), pp.207-215. ⟨10.1093/rpd/ncw116⟩. ⟨hal-01878993⟩
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