Therapeutic radionuclides: biophysical and radiobiologic principles.

Therapeutic radionuclides: biophysical and radiobiologic principles.
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DOI:
10.1053/j.semnuclmed.2008.05.002
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发表时间:
2008-09
影响因子:
4.9
通讯作者:
Kassis AI
Kassis AI
中科院分区:
医学2区
文献类型:
--
作者:
Kassis AI

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尽管体外放射线治疗和放射性核素治疗的一般放射生物学原理是相同的,但两种类型的辐射的生物物理学和放射生物学效应存在显着差异。除了放射微粒外,靶向放射性核素治疗的特点是:(一)照射时间延长,剂量率通常下降;(二)放射性分布不均匀,吸收剂量也不均匀;(三)粒子电离密度不同,质量也不同。本章探讨了带电粒子穿越哺乳动物细胞所产生的生物学效应的特殊特征。它还强调了当这些放射性核素和放射性靶向药物用于治疗癌症时所学到的东西。
Although the general radiobiologic principles underlying external beam therapy and radionuclide therapy are the same, there are significant differences in the biophysical and radiobiologic effects from the two types of radiation. In addition to the emission of particulate radiation, targeted radionuclide therapy is characterized by (i) extended exposures and, usually, declining dose rates; (ii) nonuniformities in the distribution of radioactivity and, thus, absorbed dose; and (iii) particles of varying ionization density and, hence, quality. This chapter explores the special features that distinguish the biologic effects consequent to the traversal of charged particles through mammalian cells. It also highlights what has been learned when these radionuclides and radiotargeting pharmaceuticals are used to treat cancers.
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发表时间: 1987-01-01
期刊: RADIATION RESEARCH
影响因子: 3.4
作者:
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