Investigation of phantom’s volume effect in NIPAM Gel Dosimetery

In this study, NIPAM polymer gel dosimeters were irradiated using Gamma cell (PX-30 Russia) with dose transitional 1.36 Gary to access three dimensional dose distribution. To avoid dose build up they were placed in a 4.5 mm pod Plexiglas with a 0.093 dose rate. Then, they were read by MRI and using magnetic modified of gel and gamma-ray with TE=22. Also thickness of each slice was 0.5. We use MATLAB to achieve the R2-dose curve with 95% dose certain level in a radial direction of 2 cm for comparing with the result of Rodriguez et al. Decreasing R2-dose from bottom to up was clarified at the end.

Keywords:

NIPAM Polymer Gel Dosimetry , Gamma Cell , Dose distribution