目的探讨头部面罩固定技术在脑瘤调强适形放疗中的效果。
Conclusion Facemask immobilization technique can achieve good reproducibility and high accuracy in the CRT and IMRT for brain tumors.
调强放疗(IMRT)是一种先进的适形放射治疗方法，能提高放射治疗的治疗增益比，促进肿瘤的局部控制。
As an advanced conformal therapy, Intensity-modulated radiotherapy (IMRT) can increase the gain ratio of radiotherapy and improve the local control of the tumor.
目前质子治疗的分类主要有质子适形及调强放疗、质子立体放射治疗、质子扫描照射等。
Proton therapy consists of Conformal Proton Radiotherapy, Intensity-Modulated Proton therapy, Stereotactic Radiotherapy, Proton Scanning Radiation and et al.
目的：测定和分析三维适形及调强放疗的摆位误差，并依此计算CTV外扩PTV边界的大小。
Objective: To examine and analyze the set-up errors for patients with three dimensional conformal and Intensity Modulated Radiotherapy to calculate CTV referential safety margins of PTV.
目的：测定和分析三维适形及调强放疗的摆位误差，并依此计算CTV外扩PTV边界的大小。
Objective: To examine and analyze the set-up errors for patients with three dimensional conformal and Intensity Modulated Radiotherapy to calculate CTV referential safety margins of PTV.
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