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目的:探讨胸腹部肿瘤放射治疗的固定方法,比较利用真空垫与不用真空垫时0位源皮距的改变情况。方法:利用真空垫为胸腹肿瘤进行模拟定位,并将30例胸腹肿瘤病人进行背后野、背恻野治疗时,利用真空垫及不用真空垫时的SSD(源皮距)的误差比较。结果:利用真空垫对胸腹肿瘤病人的体位固定有改善,可起到桥梁作用。结论:真空垫为胸腹部肿瘤放疗一种好的固定方法,值得推广。
OBJECTIVE: To study the fixation of radiotherapy in thoracic and abdominal tumors and to compare the change of 0-source skin-gap with and without vacuum pad. Methods: The vacuum pad was used to simulate the location of the thoracoabdominal tumor. Thirty patients with thoracoabdominal tumor were retrospectively analyzed for the error of SSD (Source Skin Distance) when using the vacuum pad and without vacuum pad. Results: The use of vacuum pad on chest and abdomen tumor patients with fixed position improved, can play a bridge role. Conclusion: The vacuum pad is a good method of radiotherapy for chest and abdomen tumors and is worth promoting.