The linear-quadratic model is an appropriate methodology for determining isoeffective doses at large doses per fraction.

The linear-quadratic model is an appropriate methodology for determining isoeffective doses at large doses per fraction.
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DOI:
10.1016/j.semradonc.2008.04.004
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发表时间:
2008-10
影响因子:
3.5
通讯作者:
Brenner, David J.
Brenner, David J.
中科院分区:
医学2区
文献类型:
--
作者:
Brenner, David J.

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最常用于定量预测放射治疗中剂量/分次依赖性的工具是基于机械的线性二次(LQ)模型。LQ形式主义现在几乎普遍用于计算不同分割/延长方案的辐射等效应剂量。总之,LQ具有以下用于预测等效应剂量的有用特性:首先,它是一种基于生物学的机制模型;第二,它具有足够少的参数以实用;第三,大多数其他细胞杀伤机制模型预测与LQ相同的分级依赖性;第四,它具有实验室分级/剂量率效应的有据可查的预测特性;第五,在实验上和理论上,高达约10戈伊/分次的剂量是合理的,并且对于高达约18戈伊/分次的剂量使用是合理的。迄今为止,没有证据表明LQ在临床应用时存在问题。
The tool most commonly used for quantitative predictions of dose / fractionation dependencies in radiotherapy is the mechanistically-based linear-quadratic (LQ) model. The LQ formalism is now almost universally used for calculating radiotherapeutic isoeffect doses for different fractionation/protraction schemes. In summary, LQ has the following useful properties for predicting isoeffect doses: First, it is a mechanistic, biologically-based model; second, it has sufficiently few parameters to be practical; third, most other mechanistic models of cell killing predict the same fractionation dependencies as does LQ; fourth, it has well documented predictive properties for fractionation/dose-rate effects in the laboratory; fifth, it is reasonably well validated, experimentally and theoretically, up to about 10 Gy / fraction, and would be reasonable for use up to about 18 Gy per fraction. To date, there is no evidence of problems when LQ has been applied in the clinic.
DOI: 10.1016/0360-3016(82)90459-x
发表时间: 1982-01-01
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