6533b857fe1ef96bd12b3b74

RESEARCH PRODUCT

Fogging effect correction of Gafchromic HD-V2 film response for its use in high-dose radiotherapy

Elio Angelo TomarchioCristiano CalligaroAldo Parlato

subject

Materials scienceDosimeterFoggingbusiness.industryCalibration curveSettore ING-IND/20 - Misure E Strumentazione Nuclearimedicine.medical_treatmentBrachytherapydosimetry GAFChromic film gamma radiation radiotherapy030218 nuclear medicine & medical imagingRadiation therapy03 medical and health sciences0302 clinical medicine030220 oncology & carcinogenesisAbsorbed dosemedicineDosimetrybusinessQuality assuranceBiomedical engineering

description

GAFChromic® HD-V2 film is a reliable dose measurement device, thin, flexible, inexpensive, simple to use and easy to analyze. The response in terms of net absorbance with respect to absorbed dose was found to be linear in a large dose range, which supports the feasibility of using the film dosimeters in many applications, such as radiotherapy. For its use, a "fogging" effect must be take into account since film response changes with time. To determine a calibration curve valid for any time, fogging effect was investigated for more than 400 days. A correction procedure allows the use of HD-V2 film dosimeters in high-dose radiotheraphy, as brachytherapy, and quality assurance (QA) procedures.

yearjournalcountryeditionlanguage
2020-06-01
10.1109/melecon48756.2020.9140609http://hdl.handle.net/10447/509057