电子学报Issue(2)：383-386,4.DOI:10.3969/j.issn.0372-2112.2015.02.027
基于配准的肺4D-CT图像超分辨率重建
Registration Based Super-Resolution Reconstruction for Lung 4D-CT Image
摘要
Abstract
Lung 4D-CT plays an important role in lung cancer radiotherapy .However ,due to the great inter-slice thickness , the fuzzy images will be induced because of interpolation operation during the multi-plane display .In this paper ,we take the low-resolution images of different phases in the corresponding position as different “frame”images ,and propose a registration based su-per-resolution reconstruction method to improve the resolution of lung 4D-CT images .First ,we employ the Active Demons registra-tion to estimate the motion field between different “frames”.Then ,the projection onto convex set (POCS ) approach is employed to reconstruction high-resolution lung images .The experimental results show that our method can get more clear lung images and sig-nificantly enhance image structure ,compared with the cubic spline interpolation and back projection method .关键词
肺4D-CT数据/超分辨率重建/Active Demons配准/projection onto convex set (POCS) 算法Key words
lung 4D-CT data/super-resolution reconstruction/Active Demons registration/POCS algorithm分类
信息技术与安全科学引用本文复制引用
吴秀秀,肖珊,张煜..基于配准的肺4D-CT图像超分辨率重建[J].电子学报,2015,(2):383-386,4.基金项目
国家自然科学基金（No ．31271067）；广东省自然科学基金 （）
