INSIGHT INTO AUTOMATED SEGMENTATION USING DEFORMABLE REGISTATION IN 4D RADIOTHERAPY

摘要：

The purpose of this work is to demonstrate a method of automated contour segmentation by deformable registration on four-dimensional CT data.A deformable image registration method is used to map the original contour to other phases.A few control points are selected on a delineated phase.Then Fourier interpolation is used to complete the contour.Application of this approach to 4D CT images shows that displacements of geometrical center of delineated and generated contour are within 2mm and the maximum volume difference is just 1.5ml.The level of accuracy is acceptable for most radiotherapy applications.The robustness and accuracy of this approach show that it is a valuable tool for 4D radiation treatment planning.

关键词： 4D CT contouring Deformable registration demons algorithm Fourier interpolation

作者: DUAN ZHUOLEI

作者单位: Department of Computation Science & Technology Nanchang Institute of Technology Nanchang,China

会议类型: 国际会议

会议名称: 2011 3rd International Conference on Computer Technology and Development(2011第三届计算机技术与发展国际会议 ICCTD2011)

会议地点: 成都

会议语种:英文

页码: 1278-1282

在线出版日期: 2011-11-25（万方平台首次上网日期，不代表论文的发表时间）