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 ›› 2015, Vol. 26 ›› Issue (5): 050301 doi: 10.13538/j.1001-8042/nst.26.050301


Electron irradiation effects of radiochromic PCDA vesicle gel dosimeters

SUN Peng,1, 2 FU Yu-Chuan ,3 HU Juan ,4 LI Lei,5 WANG Xiao,5 HUANG Wei ,5 JIANG Bo 2   

  1. 1Department of Mathematics and Physics, Officers College of PAP, Chengdu 610213, China
    2National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
    3Radiation Physics Technique Center, West China Hospital, Chengdu 610041, China
    4Radiotherapy Department, The Fifth People’s Hospital of Chengdu, Chengdu 611130, China
    5Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China
  • Contact: HUANG Wei, JIANG Bo;
  • Supported by:

    Supported by National Natural Science Foundation of China (No. 81301934), the Science and Technology Development Foundation of China Academy of Engineering Physics (No. 2013B0301035)

SUN Peng, FU Yu-Chuan, HU Juan, LI Lei, WANG Xiao, HUANG Wei, JIANG Bo . Electron irradiation effects of radiochromic PCDA vesicle gel dosimeters.Nuclear Science and Techniques, 2015, 26(5): 050301     doi: 10.13538/j.1001-8042/nst.26.050301


The gel dosimeter has the uniquely capacity in recording radiation dose distribution in three dimensions (3D), which has the specific advantages in dosimetry measurements where steep dose gradients exist. In this study, a novel radiochromic gel dosimeter was developed by dispersing nanovesicles self-assembled by 10, 12-pentacosadiynoic acid (PCDA) into the tissue equivalence gel matrix. The characteristics of radiochromic PCDA vesicle gel dosimeters were evaluated. Results indicate that these radiochromic gel dosimeters have good linear response to 1.7MeV electron beam irradiation in the dose range of 0.32–6.36 kGy. In addition, the radiochromic gel dosimeters overcome the limitations of the existing gel dosimeters such as diffusion effect, post-radiation effect, and poor forming ability. Hence, the radiochromic PCDA vesicle gel dosimeters developed could be generally applied to 3D dose distribution measurement with optical readout.

Key words: Radiochromic gel dosimeter, PCDA nanovesicle, 3D dose distribution measurement, Post-radiation effect