RT Journal Article
T1 Radiochromic film dosimetry for protons up to 10 MeV with EBT2, EBT3 and unlaminated EBT3 films
A1 Sánchez Parcerisa, Daniel
A1 Sanz García, Irene
A1 Ibáñez García, Paula Beatriz
A1 España Palomares, Samuel
A1 Espinosa Rodríguez, Andrea
A1 Gutiérrez Neira, Carolina
A1 López Fernández, Alfonso
A1 Vera, Juan Antonio
A1 Mazal, Alejandro
A1 Fraile Prieto, Luis Mario
A1 Udías Moinelo, José Manuel
AB Passive dosimetry with radiochromic films is widely used in proton radiotherapy, both in clinical and scientific environments, thanks to its simplicity, high spatial resolution and dose-rate independence. However, film under-response for low-energy protons, the so-called linear-energy transfer (LET) quenching, must be accounted and corrected for. We perform a meta-analysis on existing film under-response data with EBT, EBT2 and EBT3 GAFchromic (TM) films and provide a common framework to integrate it, based on the calculation of dose-averaged LET in the active layer of the films. We also report on direct measurements with the 10 MeV proton beam at the Center for Microanalysis of Materials (CMAM) for EBT2, EBT3 and unlaminated EBT3 films, focusing on the 20-80 keV mu m(-1) LET range, where previous data was scarce. Measured film relative efficiency (RE) values are in agreement with previously reported data from the literature. A model on film RE constructed with combined literature and own experimental values in the 5-80 keV mu m(-1) LET range is presented, supporting the hypothesis of a linear decrease of RE with LET, with no remarkable differences between the three types of films analyzed.
PB IOP Publishing
SN 0031-9155
YR 2021
FD 2021
LK https://hdl.handle.net/20.500.14352/100108
UL https://hdl.handle.net/20.500.14352/100108
LA eng
NO Sanchez-Parcerisa, D., Sanz-García, I., Ibáñez, P., España, S., Espinosa, A., Gutiérrez-Neira, C., ... & Udías, J. M. (2021). Radiochromic film dosimetry for protons up to 10 MeV with EBT2, EBT3 and unlaminated EBT3 films. Physics in Medicine & Biology, 66(11), 115006.
NO Comunidad de Madrid
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO European Commission 
NO Universidad Complutense de Madrid
NO Instituto de Salud Carlos III
NO Pro CNIC Foundation
DS Docta Complutense
RD 7 abr 2025