CAJ | 학술논문

目的：探讨两种不同体位固定技术在胸部肿瘤放射治疗中的摆位误差，分析并比较其摆位准确性。方法选择本院2011年12月至2013年6月64例胸部肿瘤患者，所有患者均接受放射治疗。按随机数字表法将患者均分为两组，每组32例。低温热塑体膜组采用热塑体膜方法固定体位，真空负压袋组则采用真空负压袋法固定体位。对比分析两组在左右方向（X轴）、前后方向（Z轴）、头足方向（Y轴）和三维方向（I）上的摆位误差。结果低温热塑体膜组可显著降低前后方向的摆位误差（1.13±0.33 vs 2.33±1.24， P ＜0.05），两组在左右、头足和三维方向摆位误差比较差异无统计学意义（ P ＞0.05）。结论低温热塑体膜固定技术有助于降低胸部肿瘤放射治疗体位的固定，减少前后方向的摆位误差，提高了其摆位的精准度。
목적：탐토량충불동체위고정기술재흉부종류방사치료중적파위오차，분석병비교기파위준학성。방법선택본원2011년12월지2013년6월64례흉부종류환자，소유환자균접수방사치료。안수궤수자표법장환자균분위량조，매조32례。저온열소체막조채용열소체막방법고정체위，진공부압대조칙채용진공부압대법고정체위。대비분석량조재좌우방향（X축）、전후방향（Z축）、두족방향（Y축）화삼유방향（I）상적파위오차。결과저온열소체막조가현저강저전후방향적파위오차（1.13±0.33 vs 2.33±1.24， P ＜0.05），량조재좌우、두족화삼유방향파위오차비교차이무통계학의의（ P ＞0.05）。결론저온열소체막고정기술유조우강저흉부종류방사치료체위적고정，감소전후방향적파위오차，제고료기파위적정준도。
Objective To explore the setup errors of two different position fixing techniques in radiotherapy for thoracic canc -er, and analyze and compare the accuracy and repeatability of the two different techniques .Methods Sixty four patients with thoracic cancer were selected in our hospital from December 2011 to June 2013 .All patients received radiotherapy .Patients were divided into two groups by means of random number table .Each group had 32 cases.The low-temperature thermoplastic membrane group used ther-moplastic membrane method to fix position while vacuum bag group with negative pressure fixed position by vacuum bag method .The setup errors in the right/left direction (X-axis), anterior/posterior direction (Z-axis), head/foot direction (Y-axis) and three dimen-sional directions ( I) were compared and analyzed between the two groups .Results The low-temperature thermoplastic membrane group was able to reduce the setup errors significantly in the Z-axis (1.13 ±0.33 /2.33 ±1.24, P <0.05).The differences of setup errors in X-axis, Y-axis and I between the two groups were not significant ( P >0.05).Conclusions Position fixing technique with low-temperature thermoplastic membrane can help to fix position in radiotherapy for thoracic cancer , reduce the setup errors in the Z-axis, and improve the setup accuracy .