数字化模拟定位机在肿瘤放疗中的应用

发布时间：2018-03-31 06:29

本文选题：肿瘤　切入点：数字化模拟定位机　出处：《实用医学杂志》2015年20期

【摘要】：目的:探讨数字化模拟定位机在肿瘤放疗中的应用。方法:利用数字化模拟定位机于等中心复位时分别拍摄0°、90°方向、面积10×10 cm2矩形野和任意野号的适时野数字化模拟机图像,分别将拍摄的图像与TPS相对应的DRR图像通过骨性标志匹配测量出等中心点的误差和适时野误差。再利用直线加速器Iview-GT系统用同样的方法拍摄矩形野和适时野EPID图像,并与TPS相对应的DRR图像通过骨性标志匹配测量出等中心点误差和适时野误差。将数字化模拟定位机所测得的各项误差与Iview-GT系统所测得的误差进行比较。结果:数字化模拟定位机所测得的等中心点误差和适时野误差结果均优于Iview-GT系统所测得误差(均P=0.000)。结论:数字化模拟定位机在肿瘤放疗中的应用能够更准确地对各项误差进行测量,纠正摆位偏差,使得放疗定位更精确,治疗更准确。
[Abstract]:Objective: to explore the application of digital analogue locator in tumor radiotherapy.Methods: the digital analog positioning machine was used to photograph the digital analog images of 0 掳90 掳direction, 10 脳 10 cm2 rectangular field and any field number respectively.The errors of isocentric point and timely field were measured by bony mark matching between the image taken and the DRR image corresponding to TPS.Using the linear accelerator Iview-GT system, the rectangular field and the timely field EPID images were captured by the same method, and the corresponding DRR images corresponding to TPS were used to measure the isocentric point error and the timely field error by bone marker matching.The errors measured by the digital analog positioning machine are compared with the errors measured by the Iview-GT system.Results: the isocentric point error and timely field error measured by digital analog positioning machine were better than those measured by Iview-GT system (P < 0. 000).Conclusion: the application of digital analogue locator in tumor radiotherapy can more accurately measure the errors, correct the error of pendulum, and make the positioning of radiotherapy more accurate and the treatment more accurate.
【作者单位】：南昌大学第一附属医院;
【基金】：江西省卫计委资助课题(编号:20141036)
【分类号】：R730.55

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