结论左侧乳腺癌保乳术后,调强放疗能改善靶区剂量分布、减少心脏受照剂量和体积。
Conclusion IMRT can improve CTV dose distribution and reduce the cardiac dose and volume for the left breast cancer after breast-conserving surgery.
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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