摘要
目的比较负压真空垫与普通软枕分别配合热塑头颈肩膜体位固定技术在脊柱后凸头颈部肿瘤患者放疗摆位中的重复性。方法收集2013年9月至2014年12月22例脊柱后凸头颈部肿瘤（含原发和继发）患者，按随机数字表法平均分为A、B组，分别用负压真空垫（A组）与软枕（B组）垫高腰臀部以使患者能仰卧CT—Sim床、枕于头托，热塑头颈肩膜固定后CT-Sim定位。每放疗5次CT。Sire校位1次。以颅骨右茎突尖足方向末层中心点为参考点，用CT．Sim软件测量左茎突尖足方向末层中心点、定位坐标系原点在患者左右、头足、腹背（x、y、z）方向三维空间位置变化，并分析数据。结果A组较B组骨洼标记问摆位误差显著降低（P〈0．05），平均摆位误差分别为x轴（0．68±0．14）、（1．15±0．77）mm，y轴（0．48±0．23）、（1．49±1．24）mm，z轴（0．76±0．54）、（2．11±1．02）mm；坐标系转移误差显著降低（P〈0．05）：平均转移误差分别为x轴（0．70±0．21）、（1．15±0．93）mm，y轴（0．50±0．31）、（1．50±1．28）mm，z轴（0．85±0．26）、（1．77±0．88）mm。结论负压真空垫配合热塑头颈肩膜体位固定技术在严重脊柱后凸头颈部肿瘤患者放疗摆位中重复性好。
Objective To compare the repeatability of radiotherapy placement between negative pressure vacuum pad （A group） and common soft pillow （B group） combined with a thermoplastic membrane immobilization technology in severe kyphosis patients with head and neck cancer. Methods From September 2013 to December 2014, 22 cases of severe kyphosis patients with primary or secondary head and neck cancer who received radiotherapy were randomly divided into group A and group B. Padding waist hips with negative pressure vacuum pad and ordinary soft pillow were used so that the patients could lay in CT-Sim bed, and the head cushion was set on the headrest. After the fixing of thermoplastic head and neck shoulder membrane, CT-Sim was located. Every five times of radiotherapy were accompanied by CT-Sim school position once. In the direction of the last layer of right styloid process center point as the reference point, CT-sim software was used to measure the location change with left and right sides, head, and under direction （x, y, z, respectively） in patients, and the data were analyzed. Results Group A significantly reduced the osseous placement error between tags compared with group B （P 〈 0.05）. The average placement errors were as follows, x： （0.68±0.14） mm vs （1.15±0.77） mm, y： （0.48±0.23） mm vs （1.49±1.24） mm, z： （0.76±0.54） mm vs （2.11±1.02） mm, while the average transfer errors were as follows, x： （0.70±0.21） mm vs （1.15±0.93） mm, y： （0.50±0.31） mm vs （1.50±1.28） mm, z： （0.85±0.26） mm vs （1.77±0.88） mm. Conclusion Vacuum suction pad combined with thermoplastic membrane has good repeatability on radiotherapy positioning for severe kyphosis patients with head and neck cancer.
出处
《肿瘤研究与临床》
CAS
2016年第6期399-403,共5页
Cancer Research and Clinic
基金
江苏省重点实验室开放课题基金（kjs1026）
苏州大学重点实验室基金（sxhz2010002）
关键词
头颈部肿瘤
真空垫
头颈肩膜
放疗摆位重复性
误差
脊柱后凸
Head and neck neoplasms
Vacuum pad, head and neck shoulder membrane
Radiotherapy positioning repeatability
Errors
Hunchback
