赵攀,宋钢,林辉,等.基于CT值的外轮廓提取方法在精确放疗计划制定中的实现[J].中华放射医学与防护杂志,2007,27(5):463-466.ZHAO Pan,SONG Gang,LIN Hui,et al.Implementation of outside contour extraction based on CT number in making plan of accurate radiotherapy[J].Chin J Radiol Med Prot,2007,27(5):463-466 |
基于CT值的外轮廓提取方法在精确放疗计划制定中的实现 |
Implementation of outside contour extraction based on CT number in making plan of accurate radiotherapy |
投稿时间:2006-11-02 |
DOI: |
中文关键词: 精确放射治疗 CT值 外轮廓提取 W/L算法 |
英文关键词:Accurate radiotherapy CT number Outside contour extraction W/L algorithm |
基金项目:国家“973”计划项目(2006CB708307),安徽省自然科学基金项目(070413081) |
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中文摘要: |
目的 给精确放疗计划制定中的剂量计算和人体外形三维重建提供准确的外轮廓。方法 借助W/L算法,在分析CT值与人体组织关系的基础上,用基于CT值的方法实现人体外轮廓的提取。结果 和常用的外轮廓提取方法相比,提取的结果基本一致,但速度提高了2.5倍。结论 基于CT值的外轮廓提取方法无需进行二值化,能快速准确地提取人体的外轮廓,在精确放射治疗方面的应用性较强。 |
英文摘要: |
Objective To supply more precise outside contour for dose calculation and 3D reconstruction in accurate radiotherapy. Methods With the W/L algorithm, the automatic outside contour extraction based on CT number was realized, after the relation between CT number and the tissue of human body had been analyzed. Results The speed in this way was 2.5 times greater than the traditional one with the same results. Conclusions The method of outside contour extraction based on CT number need not to be bivalued, and the precise outside contour of human body can be obtained quickly. This method might have good application in accurate radiotherapy. |
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