CALIBRATION OF GAFCHROMIC EBT3 FILM FOR DOSIMETRY OF SCANNING PROTON PENCIL BEAM (PBS). Issue 1 (17th January 2018)

• Record Type: Journal Article
• Authors: Krzempek, D; Mianowska, G; Bassler, N; Stolarczyk, L; Kopeć, R; Sas-Korczyńska, B; Olko, P
• Is Part Of: Radiation protection dosimetry. Volume 180:Issue 1/4(2018)
• Page Start: 324
• Page End: 328
• Publication Date: 2018-01-17
• Subjects: Radiation dosimetry -- Periodicals; Radiation -- Safety measures -- Periodicals; 363.1799
• DOI: 10.1093/rpd/ncx304
• Languages: English
• ISSNs: 0144-8420

Abstract

Abstract: Gafchromic EBT3 films are applied in proton radiotherapy for 2D dose mapping because they demonstrate spatial resolution well below 1 mm. However, the film response must be corrected in order to reach the accuracy of dose measurements required for the clinical use. The in-house developed AnalyseGafchromic software allows to analyze and correct the measured response using triple channel dose calibration, statistical scan-to-scan fluctuations as well as experimentally determined dose and LET dependence. Finally, the optimized protocol for evaluation of response of Gafchromic EBT3 films was applied to determine 30 × 40 cm 2 dose profiles of the scanning therapy unit at the Cyclotron Centre Bronowice, CCB in Krakow, Poland.