Nakagawa Kouichi, Kobukai Ken, Sato Yuzuru
Department of Radiological Life Sciences, Graduate School of Health Sciences, Hirosaki University, 66-1 Hon-cyo, Hirosaki, 036-8564, Japan
Department of Health Sciences, Hirosaki University, 66-1 Hon-cyo, Hirosaki, 036-8564, Japan.
J Radiat Res. 2014 Jul;55(4):726-9. doi: 10.1093/jrr/rru018. Epub 2014 Mar 26.
We investigated stable radicals produced by 0.25-4.5 Gy doses of X-ray irradiation of sucrose. Electron spin resonance (ESR) is able to observe the signal from sucrose irradiated at 0.25 Gy. The ESR signal intensity of the radicals is related to the accumulated dose, and it increases linearly with increasing absorbed dose. In addition, we examined the effect of dose rate (0.50-1.5 Gy/min) on the signal intensity of the irradiated sucrose. The stable radical production did not exhibit dose rate dependence. In addition, the peak corresponding to the irradiated glucose was observed to increase more with increasing absorbed dose than the peak corresponding to irradiated fructose. Therefore, the present ESR results regarding the 0.25-4.5 Gy irradiation of sucrose provide new insights into a possible sucrose ESR dosimeter.
我们研究了用0.25 - 4.5 Gy剂量的X射线照射蔗糖所产生的稳定自由基。电子自旋共振（ESR）能够观测到用0.25 Gy照射的蔗糖的信号。自由基的ESR信号强度与累积剂量相关，并且随着吸收剂量的增加呈线性增加。此外，我们研究了剂量率（0.50 - 1.5 Gy/分钟）对照射后蔗糖信号强度的影响。稳定自由基的产生未表现出剂量率依赖性。另外，观察到照射葡萄糖对应的峰随着吸收剂量的增加比照射果糖对应的峰增加得更多。因此，目前关于用0.25 - 4.5 Gy照射蔗糖的ESR结果为一种可能的蔗糖ESR剂量计提供了新的见解。
