【摘 要】
：
Objective:To select reasonable treatment methods for liver tumor,the dose distribution by three-dimensional treatment planning system(TPS)for target area an
【机 构】
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Department of radiation therapy,The second hospital affiliated to the xing tai medical college,Hebei
【出 处】
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The 15th Asia-Oceania Congress of Medical Physics (AOCMP2015
论文部分内容阅读
Objective:To select reasonable treatment methods for liver tumor,the dose distribution by three-dimensional treatment planning system(TPS)for target area and normal liver around liver tumor in four intensity modulated radiation therapy plans were assessed.Methods:Selected 15 patients with liver tumor,Four IMRT plans were designed for each patient:Two coplanar intensity modulated radiation therapy plans(plan A、plan B)and two non-coplanar intensity modulated radiation therapy plans(plan C、plan D).The same physical objective function was applied for the same patient in four plans.Comparison the dose distribution of the target area and the mean dose,V10,V20,V30,V40 for the normal liver.Results :Compared to IMRT,non-coplanar intensity modulated radiation therapy(NC-IMRT)significantly reduced the volume of normal liver V10,V20,V30 and mean dose of the normal liver.Without obvious variations in CI,HI,spinal cord and kidney.However,the volume of liver V40 was no significant change.Conclusions:During radiotherapy for patients with liver tumor,NC-IMRT might reduced the irradiated dose of the normal liver,which would allow the risk of radiation induced liver disease(RILD).
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