Gafchromic XRQA-2 film for Strontium-90/Yttrium-90 (Sr-90/Y-90) Detection

Gafchromic XRQA-2 radiochromic film is an effective tool for quality assurance and dose assessment in kilovoltage radiotherapy and diagnostic applications. This work is done to study the response of Gafchromic XRQA-2 film for beta particle detection. Materials investigated are the beta particle source, Sr-90/Y-90 and Gafchromic XRQA-2 film. The film is exposed to Sr-90/Y-90 for different duration of time and scanned with flatbed scanner. The film is analyzed by using a ImageJ software in the red mode. The result shows that the net reflected optical density (Net ROD) increased linearly with increase in time. The Net ROD and time integrated specific surface activity increased linearly with time. The Net ROD for Sr-90/Y-90 is from 0.00 to 0.13. Thus, the Net ROD is highly related to the duration of time exposed to the beta source.