Abstract :
Background: Radiochromic film is used for radiation dose measurement, XR-RV3 is used in fluoroscopy and EBT2 film in radiation therapy. The aim was to determine if the dosimetric properties of these two films are comparable in megavolt photon beams. Materials and Methods: Comparison measurements included: calibration curves, heterogeneous phantom dose profiles, and nasopharynx dose distribution measurement. Results: Both film types required 24 hours to stabilize. Their heterogeneous phantom dose profiles were similar, and their dose distributions for a nasopharynx treatment were within 3%/3mm. Conclusion: Dose distributions between both films showed good correlation and XR-RV3 film can be used in radiotherapy for quality control checks.
