胸部肿瘤患者放疗体位固定方式比较

目的:探讨真空负压袋固定技术和低温热塑体膜固定技术在胸部肿瘤患者治疗摆位精度的作用价值。方法:将60例患者固定方式分为两组,一组30例使用真空负压袋固定,另一组30例采用胸腹低温热塑体膜固定技术,比较两组中心点移位情况。结果:两组x轴、y轴方向移位范围无明显差异(P>0.05),z轴有明显差异(P<0.05)。结论:胸部肿瘤患者由于呼吸动度、胸廓变化、皮肤(松弛)牵拉等因素,造成摆位误差,使用胸腹低温热塑体膜固定技术明显减少摆位误差,从而提高了治疗摆位精确度。

Objective： To investigate the vacd uum bag fixation techniques and low - tem- perature thermoplastic membrane fixation in thoracic cancer patient positioning in the role of the value of precision. Methods：60 patients were divided into two groups a fixed way, a group of 30 cases of the use of vacuum bag is fixed, another group of 30 cases with thoraco - abdominal low - temperature thermoplastic membrane fixation techniques were compared focal point shifting. Results： The two x - axis, y - axis direction of displacement range was no significant differ- ence （P 〉 0. 05）, z - axis there are significant differences （ P 〈 0. 05 ）. Conclusion： The thoracic tumor patients because of respiratory mobility, thoracic changes, skin （relaxation） stretch and other factors, resulting in proper positioning errors, the use of abdominal low -temperature thermoplas- tic membrane fixation techniques significant- ly reduced errors anyway, so as to enhance the treatment Positioning accuracy degrees.