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

页码：30 / 33

页数：4

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