| 基于B样条的弹性配准在放疗CT图像间配准的应用 |
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| 引用本文： | 庞皓文,孙小扬,杨波,罗惠群,吴虹,吴敬波.基于B样条的弹性配准在放疗CT图像间配准的应用[J].中国医学物理学杂志,2011,28(5):2887-2889. |
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| 作者姓名： | 庞皓文 孙小扬 杨波 罗惠群 吴虹 吴敬波 |
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| 作者单位： | 泸州医学院附属医院肿瘤科,四川泸州,646000 |
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| 摘 要： | 目的:应用B样条弹性模型研究肿瘤患者放疗前CT图像与放疗后CT图像之间的弹性配准。方法:利用B样条自由弹性模型(free-form deformations,FFD),以灰度差平方和(Sum of Squared Differences,SSD)为相似性测度函数,通过基于多分辨率的B样条弹性配准方法对同一患者放疗前与放疗后的CT图像进行配准。结果:图像通过高斯滤波处理,应用B样条弹性模型,得到较为理想的弹性配准实验结果。结论:基于B样条的CT与CT图像弹性配准可以较好地建模放疗前与放疗后肿瘤区域的形变,为临床分析肿瘤的变化提供支持。
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| 关 键 词： | B样条 弹性配准 自由形变模型 CT |
CT Images Non-rigid Registration Using the B Spline in Radiotherapy |
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| PANG Hao-wen,SUN Xiao-yang,YANG Bo,LUO Hui-qun,WU Hong,WU Jing-bo.CT Images Non-rigid Registration Using the B Spline in Radiotherapy[J].Chinese Journal of Medical Physics,2011,28(5):2887-2889. |
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| Authors: | PANG Hao-wen SUN Xiao-yang YANG Bo LUO Hui-qun WU Hong WU Jing-bo |
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| Institution: | PANG Hao-wen,SUN Xiao-yang,YANG Bo,LUO Hui-qun,WU Hong,WU Jing-bo (Department of Oncology,Affiliated Hospital of Luzhou Medical College,Luzhou Sichuan 646000,China) |
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| Abstract: | Objective: To investigate CT image non-rigid registration using the B spline in Radiotherapy.Methods: Using B-spline free-form deformations model and SSD as a similarity measure function,based on multi-resolution B-spline non-rigid registration method to registration CT image with the same patient before and after radiotherapy.Results: The non-rigid registration result is more satisfactory by Gaussian filtering image and using B-spline free-form deformations model. Conclusions: CT image non-rigid registrati... |
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| Keywords: | B spline non-rigid registration FFD CT |
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