title: Impact of the calibration conditions of XR-RV3 films on peak skin dose measurements in interventional radiology.
abstract: 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.
authors.affiliation: Department of Radiology, Nîmes University Hospital, Medical Imaging Group Nîmes, EA 2415, Bd Prof Robert Debré 30029 Nîmes Cedex, France.
authors.forename: J
authors.initials: J
authors.lastname: Greffier
authors.affiliation: Esprimed, 1, mail du Pr Georges Mathé, 94800 Villejuif, France.
authors.forename: C
authors.initials: C
authors.lastname: Van Ngoc Ty
authors.affiliation: CEA, LIST, Laboratoire de modélisation et simulation des systèmes, 91191 Gif sur Yvette cedex, France.
authors.forename: M
authors.initials: M
authors.lastname: Agelou
authors.affiliation: Esprimed, 1, mail du Pr Georges Mathé, 94800 Villejuif, France.
authors.forename: J
authors.initials: J
authors.lastname: Coulot
authors.affiliation: Department of Cardiology, Nîmes University Hospital, Bd Prof Robert Debré 30029 Nîmes Cedex, France.
authors.forename: B
authors.initials: B
authors.lastname: Ledermann
authors.affiliation: Department of Radiology, Nîmes University Hospital, Medical Imaging Group Nîmes, EA 2415, Bd Prof Robert Debré 30029 Nîmes Cedex, France.
authors.forename: S
authors.initials: S
authors.lastname: Ovtchinnikoff
authors.affiliation: Department of Radiology, Nîmes University Hospital, Medical Imaging Group Nîmes, EA 2415, Bd Prof Robert Debré 30029 Nîmes Cedex, France.
authors.forename: F
authors.initials: F
authors.lastname: Pereira
authors.affiliation: Department of Radiology, Nîmes University Hospital, Medical Imaging Group Nîmes, EA 2415, Bd Prof Robert Debré 30029 Nîmes Cedex, France.
authors.forename: J P
authors.initials: JP
authors.lastname: Beregi
authors.affiliation: Esprimed, 1, mail du Pr Georges Mathé, 94800 Villejuif, France.|Department of Radiology, Bretagne Atlantique Hospital Center, Bd Général Guillaudot, 56000 Vannes, France.
authors.forename: G
authors.initials: G
authors.lastname: Bonniaud
mesh_terms: D002138:Calibration; D005373:Film Dosimetry; D006801:Humans; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D015642:Radiology, Interventional