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Advantage of using the new type cervico-thoracic membrane in the positioning of the patients with cervical-thoracic tumor

Shi Xian-wei;Tang Zu-ge;Wang Li;Yuan Zhi;Department of Radiotherapy of Tumor,Nanchong Central Hospital;  
Objective:To explore the effects of positioning accuracy by the three different fixing ways.Methods:Selecting 60 patients with cervical-thoracic tumor and dividing into three groups,each group use the different membrane.Using the ELEKTA Synergy accelerator airborne CBCT to scan,than matching CBCT images with CT images by the XVI software on the basis of grey value,finally got the positioning error value,at the same time writing down the time of positioning.Each patient verified twice a week,total of 60 patients verified 492 times.Results:The cervico-thoracic membrane group'positioning error value was obviously lower than the head-neck and thorax membrane group,excepted,using cervico-thoracic membrane to fix is more quick and convenient.Conclusion:For the patients with cervical-thoracic tumor,using the new type cervico-thoracic membrane to fix is recommended.
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