肿瘤预防与治疗2011，Vol.24Issue(1)：25-27,3.DOI:10.3969/j.issn.1674-0904.2011.01.008
二维整体挡铅块制作技术改进与临床应用
Designing Technique Improvement of Two-dimensional Integral Blocks and Clinical Application
摘要
Abstract
Objective : To investigate the technique improvement of two-dimension integral blocks designing hy using computer image processing techniques and its clinical application. Methods : 79 Patients were photographed x-ray positioned film ( amplification ratio = 1. 4 ) on analog machine and the target volumes were drawn out, and then 42 cases( the study group ) were drawn the target volume of positioned film shape and central cross-wire on a blank paper. This was named SFD picture. We scanned the SFD picture and edited it by Photoshop and then printed copies at the proportion of 1 and 0. 65 which were named SAD picture and STD picture respectively. According to SAD picture we cut the plastics on manual cutting machine and so we made conformal blocks. The other 37 cases’( the control group ) conformal blocks were made by routine designing technique. Results : With this method we could design low melting conformal blocks with any shape and size. which had inner hore diameter of 30cm. Comparing with SAD picture, irregular margins’ size of conformal Cerrobend block was quite precise and the difference between them was less than 1mm. The efficiency of sticking blocks was the same as on the accelerator. The recent therapeutic effect and the acute radiotherapy reaction of the study group andthe control group were regular, and with no statistical difference( P ＞ 0. 05 ). Conclusion: Computer image technique is applied to design the conformal blocks, and to take the place of the way of sticking hlocks on accelerator. With this technique, two-dimension integral conformal block can be made quickly and accurately, and at the same time the work process has been simplified and the work efficiency improved. This new technique is worthy of spreading.关键词
整体适形铅挡块/模拟定位机/实用"粘铅仪△"分类
医药卫生引用本文复制引用
黄丙俭,柏建安,杨爱华..二维整体挡铅块制作技术改进与临床应用[J].肿瘤预防与治疗,2011,24(1):25-27,3.基金项目
临沂市科技局攻关项目(项目编号:201013059). （项目编号:201013059）
