[an error occurred while processing this directive] | [an error occurred while processing this directive]
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.
Corresponding Authors:
Lin Chengguang,Email:linchg@sysucc.org.cn
Cite this article:
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.
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.
[1]Uematsu M,Akira S,Kazuhiko T,et al. Focal,high dose,and fractionate d modified st ereotactic radiat iontherapy for lung carcinoma patients[J].Cancer,1998,82(6):1062-1070. [2]胡逸民.治疗体位及体位固定技术[A]//胡逸民,杨定宇.肿瘤放射治疗技术[M].北京;北京医科大学中国协和医科大学联合出版社,1999:200-205. [3]van Herk M, Remeijier P, Lebesque JV.Inclusion of geometric uncertainties in treatment plan evaluation[J]. Int J Radiat Oncol Biol Phys,2002,52(5):1407-1422. [4]Xiao WW, Huang SM, Han F, et al. Local control, survival, and late toxicities of locally advanced nasopharyngeal carcinoma treated by simultaneous modulated accelerated radiotherapy combined with cisplatin concurrent chemotherapy:long-term results of a phase 2 study[J]. Cancer,2011,117(9):1874-1883. [5]易俊林,高黎,黄晓东,等.416例鼻咽癌调强放疗远期生存与影响因素分析[J].中华放射肿瘤学杂志,2012,21(3):196-200. [6]戴建荣,胡逸民.图像引导放疗的实现方式[J].中华放射肿瘤学杂志,2006,15(2):132-135. [7]Mackie TR, Holmes TW, Swerdloff S, et al. Tomotherapy:a new concept for the delivery of dynamic conformal radiotherapy[J]. Med Phys,1993,20(6):1709-1719. [8]Sheng K, Molloy JA, Larner JM, et al. A dosimetric comparison of non-coplanar IMRT versus helical Tomotherapy for nasal cavity and paranasalsinus cancer[J].Radiother Oncol,2007,82(2):174-178. [9]韩琤波,贾明轩,张旭,等.兆伏级锥形束CT 在鼻咽癌调强放射治疗中的临床应用研究[J].中国医科大学学报,2010,39(8):635-638. [10]林承光,李国文,林刘文,等.鼻咽癌适形调强放射治疗中计划靶区体积不确定度的研究[J].癌症,2007,26(2):200-203. [11]杨超凤,付庆国,杨海明,等.鼻咽癌调强放疗安全外放边界的临床研究[J].广西医学,2008,30(4):491-493. [12]郭根燕,刘晓岚,郑旭,等.电子射野影像系统对鼻咽癌调强放疗摆位误差的测量[J].中国辐射卫生,2011,20(3):321-324. [13]林承光,林刘文,刘秉梯,等.鼻咽癌三维适形和调强放疗过程中头部与颈部摆位误差比较研究[J].中华放射肿瘤学杂志,2011,20(4):322-325. [14]刘裕杰,周莉钧,管西寅,等.图像引导的放射治疗在头颈部肿瘤治疗中的应用[J].中国癌症杂志,2010,20(9):707-711. [15]Astreinidou E,Bel A, Raaijmakers CP, et al. Adequate margins for random setup uncertainties in head-and-neck IMRT[J].Int J Radiat Oncol Biol Phya,2005,61(3):938-944.
2015, Vol. 24 
