A new type of PAGAT polymer gel dosimeter, containing acrylamide, gelatin, N, N'-methylene-bisacrylamide (BIS), tetrakis (hydroxymethyl) phosphonium chloride (THPC) and formaldehyde, was prepared under normal atmospheric conditions. The results show that its transverse relaxation ratio increases with the absorbed dose and its minimum detection limit is given. The dosimeter has good uniformity of one batch (better than 3.2%) and negligible dose-rate dependence in the range of 0.05-1.00 Gy/s. Using the gel dosimeter, the dose distribution of a heterogeneous interface was obtained and the dose enhancement effect was analyzed.
Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi, Xinjiang 830011, China;CTMR Department, The Fifth Teaching Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830011, China;CTMR Department, The Fifth Teaching Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830011, China
Zhao Yun,He Cheng-Fa,Liu Yan,et al. Magnetic Resonance Imaging Study of New PAGAT Polymer Gel Dosimeter[J]. Atomic Energy Science and Technology,2011,45(3):360-364.