The influence of a six degrees of freedom couch and an individual head support in patient positioning in radiotherapy of head and neck cancer

被引：5
|
作者：
Rodrigues, Myra F. [1 ,2 ]
Veen, Sten [1 ]
van Egmond, Jaap [3 ]
van Hameren, Mark [1 ]
van Oorschot, Theodorus [1 ]
de Vet, Steven [1 ]
van Santvoort, Jan P. C. [3 ]
Wiggenraad, Ruud G. J. [1 ]
Mast, Mirjam E. [1 ]
机构：
[1] Haaglanden Med Ctr, Dept Radiat Oncol, Burgemeester Banninglaan 1, NL-2262 BA Leidschendam, Netherlands
[2] Erasmus MC, Dept Radiat Oncol, Canc Inst, Doctor Molewaterpl 40, NL-3015 GD Rotterdam, Netherlands
[3] Haaglanden Med Ctr, Dept Med Phys, Burgemeester Banninglaan 1, NL-2262 BA Leidschendam, Netherlands
来源：
PHYSICS & IMAGING IN RADIATION ONCOLOGY | 2019年 / 11卷
关键词：
Head-and-neck cancer; Immobilization; Head support; Set-up correction; Six degrees of freedom couch; Cone-beam CT;
D O I：
10.1016/j.phro.2019.07.001
中图分类号：
R73 [肿瘤学];
学科分类号：
100214 ;
摘要：
Reproducible patient positioning is important in radiotherapy (RT) of head-and-neck cancer. We therefore compared set-up errors in head-and-neck RT resulting from three different patient positioning systems. Patients were either treated with a standard head support (SHS) and conventional treatment couch (SHS-3, n=10), a SHS and rotational couch (SHS-6, n=10), or an individual head support (IHS) and rotational couch (IHS-6, n=10). Interfraction mean translation vector lenghts were significantly lower for IHS-6 compared to SHS-3 (0.8 +/- 0.3 mm vs. 1.4 +/- 0.7 mm, P=0.001). Intrafraction displacement was comparable among cohorts. This study showed that the use of a six degrees of freedom couch combined with an IHS in head-and-neck RT resulted in better interfraction reproducibility.
引用
收藏
页码：30 / 33
页数：4
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