期刊文献+

重叠体积直方图描述子的计算方法和其在鼻咽癌IMRT计划检索中的应用 被引量:5

The Calculation Method of Overlap Volume Histogram and its Usage in Nasopharyngeal Carcinoma IMRT Plans Retrieval
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摘要 调强放射治疗(IMRT)计划制定效率不高、难以保证治疗计划的高质量是目前调强放射治疗技术中一直存在的问题之一,基于形状的IMRT计划检索技术为缩短IMRT计划制定周期、提高放射治疗计划质量提供了一种新方法。本研究建立了一种适用于IMRT计划检索的重叠体积直方图(OVH)形状关系的关系描述算子,提出一种基于Matlab的计算方法。利用一例临床实际的鼻咽癌病例分析了OVH描述子的描述特性,利用22例临床鼻咽癌IMRT计划研究了其形状关系检索的性能。实验结果表明OVH描述子能够简洁的描述放疗三维场景中靶区和危及器官间的三维形状关系特征,并且能够有效检索出相似度较高的一组形状,适合于基于形状的IMRT计划检索。
出处 《中国生物医学工程学报》 CAS CSCD 北大核心 2014年第3期373-378,共6页 Chinese Journal of Biomedical Engineering
关键词 重叠体积直方图 形状关系描述算子 调强放射治疗 放疗计划优化 overlap volume histogram (OVH) shape relationship descriptor intensity modulated radiation therapy (IMRT) radiation treatment planning optimization
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参考文献8

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同被引文献34

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