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用电子顺磁共振(EPR)定量辐射感应氢氧磷灰石中心的方法,精确测量两例受~(60)Co源大剂量事故照射受害者腿骨的剂量,并与临床估算结果做了比较.分析了EPR方法的优缺点,展望了EPR方法的应用前景.根据骨组织EPR谱测量原理,骨组织中的矿物质成分可作为活体剂量计用于剂量测量.骨组织中含有氢氧磷灰石,放射线照射氢氧磷灰石能感应产生生存时间较长的辐射感应顺磁中心.这些顺磁中心产生的EPR信号强度正比于氢氧磷灰石所受的剂量,故它们可以作为测量电离辐射剂量的参考量.
Quantitatively measuring the center of hydroxyapatite by electron paramagnetic resonance (EPR), we accurately measured the dose of the leg bones of victims receiving high doses of ~ (60) Co radiation and compared with the clinical estimation results The advantages and disadvantages of the EPR method are analyzed and the application prospects of the EPR method are prospected.According to the principles of the EPR measurement of bone tissue, the mineral components in the bone tissue can be used as dosimeters for the in vivo dosimetry.The bone tissue contains the hydroxyapatite Rock and radioactive hydroxyapatite can induce long-lived radiation-sensitive paramagnetic centers.The EPR signal intensity produced by these paramagnetic centers is proportional to the dose of hydroxyapatite, so they can be used as measurement ionization Reference dose of radiation dose.