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鼻咽癌发泡胶个体化塑形与标准化头枕放疗体位固定精确度比较
许森奎，姚文燕，胡江，何汇朗，张华满，陈翠，张广顺，林承光
510060 广州，华南肿瘤学国家重点实验室，中山大学肿瘤防治中心放疗科
The research of accuracy immobilized using individualized polyurethane scaling agent compared to positioning foam with standard plastics pillow in the radiotherapy of nasopharyngeal carcinoma
Xu Senkui, Yao Wenyan, Hu Jiang, He Huilang, Zhang Huaman, Chen Cui, Zhang Guangshun, Lin Chengguang
Department of Sun yat-sen University Cancer Center,State Key Laboratory of Oncology in South China,Guangzhou 510060, China
Abstract：Objective To study the superiority of polyurethane foam sealing agent immobilization with KV-CBCT for the patients with nasopharyngeal carcinoma (NPC). Methods 36 NPC patients were divided into two groups. Group A was immobilized using standard plastics pillow with the head-and-neck thermoplastic masks, and so do individualized polyurethane foam sealing agent pillow as group B. CBCT was weekly carried out weekly, and the setup errors of the head and neck position (axial (x, y, z)) were analyzed by paired t-test. The marginal was caculated using 2.5Σ+0.7σ. Results On x-, y-, z-axial,the average setup errors values of head and neck position were (－0.27±1.33) mm,(－0.31±1.50) mm,(0.54±0.90) mm and (－0.59±2.76) mm,(－0.11±2.23) mm,(0.66±1.60) mm;and the marginal were 3.28 mm, 3.64 mm,1.86 mm and 6.17 mm, 5.17 mm, 3.52 mm,respectively in Group A;with (－0.44±0.87) mm、(－0.18±1.06) mm、(0.13±0.72) mm and (－0.07±1.58) mm,(－0.04±2.11) mm,(0.03±1.31) mm, and 2.07 mm, 2.46 mm,1.71 mm and 3.57 mm, 5.03 mm, 3.16 mm, respectively in Group B.Compared with Group A to Group B,P value were 0.315,0.011,0.000 and 0.045,0.630,0.002 On x-, y-, z-axial. Conclusions The application of polyurethane foam sealing agent in the immobilization of NPC patients is better than standard plasthetics pillow, and especially for the positioning of neck. Compared to head position, the setup errors of neck are larger, so it is suggested to make the outer margin separately.
Xu Senkui,Yao Wenyan,Hu Jiang et al. The research of accuracy immobilized using individualized polyurethane scaling agent compared to positioning foam with standard plastics pillow in the radiotherapy of nasopharyngeal carcinoma[J]. Chinese Journal of Radiation Oncology, 2015, 24(2): 196-199.
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2015, Vol. 24 
