Open AccessDosimetric evaluation of GAFCHROMIC® XR type T and XR type R films
Author(s) -
Dini Sharifeh A.,
Koona Rafiq A.,
Ashburn John R.,
Meigooni Ali S.
Publication year - 2005
Publication title -
journal of applied clinical medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.83
H-Index - 48
ISSN - 1526-9914
DOI - 10.1120/jacmp.v6i1.2051
Subject(s) - dosimeter , dosimetry , materials science , thermoluminescent dosimeter , nuclear medicine , optically stimulated luminescence , ionization chamber , optics , medical physics , physics , ionization , medicine , ion , quantum mechanics
The high spatial resolution of radiochromic film makes it ideal for dosimetric measurements and dose distributions in regions of high dose gradient. Intensity‐modulated radiation therapy, intravascular brachytherapy, and eye‐plaque radiation therapy demand precise spatial dosimetric calculations. Such precision is not possible with conventional dosimeters, such as thermoluminescent dosimeters and ionization chambers. Recently, new GAFCHROMIC® XR type T and type R films have been developed for radiation dosimetry, specifically in interventional radiology procedures. Dosimetric characteristics (i.e., linearity, post‐exposure density growth, energy dependence, dose‐rate dependence, and UV light sensitivity) of these new films were investigated. To evaluate the clinical applications of these films, their characteristics were compared with other commercially available film models. GAFCHROMIC® XR type T and type R films were found to be more sensitive to low‐energy doses as compared with GAFCHROMIC® MD‐55 films. PACS numbers: 87.66‐a, 87.53‐j