论文部分内容阅读
目的:探讨不同摆位方式误差对直肠癌患者治疗效果的影响。方法:选择2010年7月—2011年6月收治的54例直肠癌患者,将其随机分为A、B、C三组,每组18例。A组患者采取大真空袋固定,B组患者采取头架及小真空袋固定,C组采用体板与体模固定,测量并计算3种摆位方式误差。结果:A组摆位在X、Z轴误差为(0.53±0.46)mm和(0.46±0.33)mm与C组的误差(1.57±0.64)mm和(1.43±0.62)mm相比,差异具有统计学意义(P<0.05)。结论:采用实用性强、精密度高的真空袋固定方式对提高直肠癌患者的放疗效果具有重要的临床意义。
Objective: To investigate the effect of different setup errors on the treatment effect of rectal cancer patients. Methods: Fifty-four patients with rectal cancer who were admitted to our hospital from July 2010 to June 2011 were randomly divided into three groups (A, B and C, n = 18). The patients in group A were fixed with large vacuum bag, the patients in group B were fixed with head rack and small vacuum bag, the group C was fixed with body plate and phantom, and the errors of three kinds of setting methods were measured and calculated. Results: The errors of group A and group X were (0.53 ± 0.46) mm and (0.46 ± 0.33) mm, respectively, compared with those of group C (1.57 ± 0.64) mm and (1.43 ± 0.62) mm Significance (P <0.05). Conclusion: It is of great clinical significance to improve the radiotherapy effect of patients with rectal cancer by using the vacuum pouch fixation method with high practicability and high precision.