[3C10-15] Dose Estimation

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)

[3C13] Dose evaluation study of PVA-KI gel dosimeter using RGB analysis method (III)

*Takeyoshi Sunagawa¹, Harvel Glenn², Sachiko Yoshihashi³, Chisako Hishiki¹, Yutaro Aoki¹ (1. FUT, 2. Ontario Tech Univ., 3. Nagoya Univ.)

Keywords:

Chemical dose meter,Gel dosimeter,Dose assessment,Radiation therapy,RGB value

In cancer treatment using radiation, radiation visualization is an essential technology for accurate evaluation of dose distribution. At our laboratory, we have developed a measurement system that combines a blue inorganic EL light source specialized for PVA-KI gel dosimeters and a digital camera using a macro lens. PVA-KI gel irradiated with X-rays was photographed using this system. The captured image was converted to RGB values. Based on the converted RGB values, they were converted to absorbance using Beer-Lambert's law, and the relationship between absorbance and absorbed dose was clarified.