腮腺癌术后不同放疗计划剂量学的比较
邓磊;张军宁
【期刊名称】《中国血液流变学杂志》 【年(卷),期】2014(000)002
【摘要】Objective To compare the homogeneity and conformity of dose distribution in the target, the treatment period of patients and the dose to the organs at risk among conventional radiation therapy (CRT), three-dimensional conformal radiation therapy (3DCRT) and intensity modulated radiation therapy (IMRT), and then to evaluate the clinical value of IMRT for postoperative irradiation of parotid cancer. Methods Ten patients with parotid cancer postoperative were selected. Before the treatment, computed tomography scan image were transferred to an IMRT planning system. To design the unilateral field with mixture of 12 MV photon and electron beams (X+E), 3DCRT, IMRT plans respectively for each patient. Through the analysis of the dose volume histogram (DVH) by single lesions of the patients, using three kinds of radiation methods, three groups were compared for conformal radiotherapy target area conformal degree, uniform index area, target area dose and each endanger organ by irradiation dose, to investigate the dosimetry advantages of IMRT. Results Compared with conventional planning, the CRT, 3DCRT and IMRT plans produced adequate target coverage, and the comformity index (CI) showed 3DCRT plans (0.76) and CRT plans
腮腺癌术后不同放疗计划剂量学的比较
