Abstract
Although a gel dosimeter is not widely used, it has many potential merits for 3D dosimetry in the development of radiotherapy techniques. Because conventional gel dosimeters tend to sensitively polymerize with oxygen. A new polymer gel that solves these problems was introduced recently. The gel dosimeter contains anti-oxidants that eliminate oxygen chemically instead of using complicated facilities. The type and the concentration of the monomer affect the polymerization of the polymer gel dosimeter. Therefore, the polymerization of the normoxic polymer gel dosimeter is affected by anti-oxidant, the monomer, the constituent ratio, and the condition of the monomer, so many researchers have concentrated on the anti-oxidant, the type of monomer, and the constituent ratio. In this study, a normoxic polymer gel dosimeter was composed using anti-oxidants in a laboratory, and the dose response and sensitivity were measured. The results of this study are as follow the threshold R2 values were reduced, and the radio sensitivity was reduced with the increasing MAA ratio. Otherwise, the increase in the gelatin represented an increase and decrease in the threshold value of R2 values and the radio sensitivity, respectively. Therefore, in this study, 6 - 8 % MAA ratios and an 8 % gelatin ratio, considering the aging effect of the gel, were the optimal values.
| Original language | English |
|---|---|
| Pages (from-to) | 147-152 |
| Number of pages | 6 |
| Journal | Journal of the Korean Physical Society |
| Volume | 56 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2010 Jan 15 |
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Keywords
- Composition ratio
- Dose response
- Normoxic polymer gel
- Radiotherapy
- Three-dimensional dosimetry
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Dose response characteristics in polymer gel for the composition ratio. / Cho, Sam Ju; Shim, Su Jung; Kim, Chul Yong; Sim, Jang Bo; Lee, Suk; Lee, Sang Hoon; Huh, Hyun Do; Shin, Dong Oh; Lee, Rena.
In: Journal of the Korean Physical Society, Vol. 56, No. 1, 15.01.2010, p. 147-152.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dose response characteristics in polymer gel for the composition ratio
AU - Cho, Sam Ju
AU - Shim, Su Jung
AU - Kim, Chul Yong
AU - Sim, Jang Bo
AU - Lee, Suk
AU - Lee, Sang Hoon
AU - Huh, Hyun Do
AU - Shin, Dong Oh
AU - Lee, Rena
PY - 2010/1/15
Y1 - 2010/1/15
N2 - Although a gel dosimeter is not widely used, it has many potential merits for 3D dosimetry in the development of radiotherapy techniques. Because conventional gel dosimeters tend to sensitively polymerize with oxygen. A new polymer gel that solves these problems was introduced recently. The gel dosimeter contains anti-oxidants that eliminate oxygen chemically instead of using complicated facilities. The type and the concentration of the monomer affect the polymerization of the polymer gel dosimeter. Therefore, the polymerization of the normoxic polymer gel dosimeter is affected by anti-oxidant, the monomer, the constituent ratio, and the condition of the monomer, so many researchers have concentrated on the anti-oxidant, the type of monomer, and the constituent ratio. In this study, a normoxic polymer gel dosimeter was composed using anti-oxidants in a laboratory, and the dose response and sensitivity were measured. The results of this study are as follow the threshold R2 values were reduced, and the radio sensitivity was reduced with the increasing MAA ratio. Otherwise, the increase in the gelatin represented an increase and decrease in the threshold value of R2 values and the radio sensitivity, respectively. Therefore, in this study, 6 - 8 % MAA ratios and an 8 % gelatin ratio, considering the aging effect of the gel, were the optimal values.
AB - Although a gel dosimeter is not widely used, it has many potential merits for 3D dosimetry in the development of radiotherapy techniques. Because conventional gel dosimeters tend to sensitively polymerize with oxygen. A new polymer gel that solves these problems was introduced recently. The gel dosimeter contains anti-oxidants that eliminate oxygen chemically instead of using complicated facilities. The type and the concentration of the monomer affect the polymerization of the polymer gel dosimeter. Therefore, the polymerization of the normoxic polymer gel dosimeter is affected by anti-oxidant, the monomer, the constituent ratio, and the condition of the monomer, so many researchers have concentrated on the anti-oxidant, the type of monomer, and the constituent ratio. In this study, a normoxic polymer gel dosimeter was composed using anti-oxidants in a laboratory, and the dose response and sensitivity were measured. The results of this study are as follow the threshold R2 values were reduced, and the radio sensitivity was reduced with the increasing MAA ratio. Otherwise, the increase in the gelatin represented an increase and decrease in the threshold value of R2 values and the radio sensitivity, respectively. Therefore, in this study, 6 - 8 % MAA ratios and an 8 % gelatin ratio, considering the aging effect of the gel, were the optimal values.
KW - Composition ratio
KW - Dose response
KW - Normoxic polymer gel
KW - Radiotherapy
KW - Three-dimensional dosimetry
UR - http://www.scopus.com/inward/record.url?scp=77954853648&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77954853648&partnerID=8YFLogxK
U2 - 10.3938/jkps.56.147
DO - 10.3938/jkps.56.147
M3 - Article
VL - 56
SP - 147
EP - 152
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
SN - 0374-4884
IS - 1
ER -