ABSTRACT
Brachytherapy treatments are classified in different categories based on the energy of the radiation source, dose rate, and type of the radiation. Radiation dosimetry in brachytherapy is challenging due to small distances and low energy. Higher special resolution, lower energy dependence of the Radiochromic film (RCF) relative to other radiation detectors such as Thermoluminescent dosimeter and diodes are among the advantages of these detectors for brachytherapy sources. The low sensitivities of these film types have created limitations for their applications in low-dose radiation fields such as dosimetry around the Low dose rate brachytherapy sources. Electronic brachytherapy sources provide similar dosimetric characteristics as the radioactive sources. RCFs are often used for quality assurance (QA) purposes in various brachytherapy procedures. These QA are performed during the daily QA or QA during the source exchange and Annual QA. Low film response with the absorbed dose was one of the disadvantages of this film for their application in brachytherapy dosimetry.
