Ordered Subset Expectation Maximum Algorithms Based on Symmetric Structure for Image Reconstruction
Ordered Subset Expectation Maximum Algorithms Based on Symmetric Structure for Image Reconstruction
复制标题
基于对称结构的图像重建有序子集期望最大值算法
DOI：
10.3390/sym10100449
复制
发表时间：
2018-10
期刊：
影响因子：
2.7
通讯作者：
Qiu Jun
中科院分区：
文献类型：
--
作者：
Liu Chang;Qiu Jun
In this paper, we propose the symmetric structure of the reconstructed points discretization model to partition and order the subsets of Ordered Subset Expectation Maximum (OSEM) algorithms for image reconstruction and then simplify the calculation of the projection coefficient matrix while satisfying the balancing properties of subsets. The reconstructed points discretization model was utilized to describe the forward and inverse relationships between the reconstructed points and the projection data according to the distance from the point to the ray rather than the intersection length between the square pixel and the ray. This discretization model provides new approaches for improving and constructing the reconstruction algorithms on the basis of the geometry of the model. The experimental results show that the OSEM algorithms based on the reconstructed points discretization model and its geometric symmetry structure can effectively improve the imaging speed and the imaging precision.
登录
查看更多内容
DOI：
10.1016/j.juro.2016.09.117
发表时间：
2017-03
期刊：
The Journal of urology
影响因子：
--
作者：
Bach-Gansmo T;Nanni C;Nieh PT;Zanoni L;Bogsrud TV;Sletten H;Korsan KA;Kieboom J;Tade FI;Odewole O;Chau A;Ward P;Goodman MM;Fanti S;Schuster DM;Willoch F
通讯作者：
Willoch F
DOI：
10.1109/isbi.2002.1029350
发表时间：
2002-11
期刊：
Proceedings IEEE International Symposium on Biomedical Imaging
影响因子：
--
作者：
M. Jiang;Ge Wang
通讯作者：
M. Jiang;Ge Wang
DOI：
10.2967/jnumed.115.164616
发表时间：
2015-08
期刊：
The Journal of Nuclear Medicine
影响因子：
--
作者：
Hongyoon Choi;D. Lee
通讯作者：
Hongyoon Choi;D. Lee
影响因子：
2.1
作者：
Reich, Simeon;Zalas, Rafal
通讯作者：
Zalas, Rafal
影响因子：
2.1
作者：
T. Elfving
通讯作者：
T. Elfving