Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2010, Vol. 21 ›› Issue (1): 60-62 doi: 10.13538/j.1001-8042/nst.21.60-62

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Preparation and characterization of FPGX hydrogel dosimeters

Xiao Ruijia1 Yang Liming1,* Chen Jie1 Qian Qiang1 Rong Liang1 Cao Fangqi1 Luo Wenyun1 Dong Xiaoqing1 Zha Yuanzi2 Wu Guohua2   

  1. 1 School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China 2 Department of Radiation Oncology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
Xiao Ruijia, Yang Liming, Chen Jie, Qian Qiang, Rong Liang, Cao Fangqi, Luo Wenyun, Dong Xiaoqing, Zha Yuanzi, Wu Guohua. Preparation and characterization of FPGX hydrogel dosimeters.Nuclear Science and Techniques, 2010, 21(1): 60-62     doi: 10.13538/j.1001-8042/nst.21.60-62


A three dimensional Fricke-(PVA-glutaraldehyde)-xylenol orange (FPGX) hydrogel dosimeter was prepared by chemical crosslinking method. Dose determination was performed by measuring the absorbance change of the dosimeter before and after irradiation using UV-Vis spectrophotometer at 585 nm. The dose response of the FPGX hydrogel dosimeter related to absorbance change was linear, when it was irradiated by X-ray in the range of 0~2 Gy. The stability of the dosimeter before and after irradiation was evaluated by studying the change of absorbance with time.

Key words: Dosimeter, PVA hydrogel, Glutaraldehyde, Crosslinking, Radiotherapy