Accelerated proliferation correction factors in linear-quadratic and multiple-component models

作者：Kehwar T S^*; Akber S F; Bhardwaj A K; Dangwal V K

来源：Iranian Journal of Radiation Research, 2007, 5(2): 53-61.

• accelerated proliferation rate
• growth fraction
• tumor control probability
• LQ model
• MC model

Background: Study in design to incorporate accelerated proliferation correction factors into linear-quadratic and multiple-component models. Materials and Methods: Accelerated proliferation rate correction factor has been incorporated into the linear quadratic and the multiple component models by applying accelerated exponential cell growth to explain the tumor cell kinetics and estimates proper treatment results. Biological effectiveness and tumor control probability, in terms of BED (LQ model), BRD (MC model), TCP(LQ model) and TCP(MC model), were computed for three conventional and two accelerated hyperfractionated radiation therapy treatment schedules with using a range of accelerated proliferation rate constants to demonstrate the effect of the proliferation process. Results: The results of the study show that the accelerated proliferation rate reduces the effectiveness of a treatment schedule delivered in a prolonged period of time. Conclusion: Care should be taken in the selection of a treatment protocol for a patient of head and neck cancer with an account of the cell kinetics of the tumor.

• 出版日期2007
• 单位河北医科大学