Acceleration of Iterative Tomographic Image Reconstruction by Reference-based Back Projection

被引：0

作者：

Cheng, Chang-Chieh ^{[1
]}

Li, Ping-Hui ^{[1
]}

Ching, Yu-Tai ^{[1
]}

机构：

[1] Natl Chiao Tung Univ, Dept Comp Sci, Hsinchu 30050, Taiwan

来源：

MEDICAL IMAGING 2016: PHYSICS OF MEDICAL IMAGING | 2016年 / 9783卷

关键词：

Computational tomography; filtered backprojection; algebraic reconstruction technique;

D O I：

10.1117/12.2216363

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The purpose of this paper is to design and implement an efficient iterative reconstruction algorithm for computational tomography. We accelerate the reconstruction speed of algebraic reconstruction technique (ART), an iterative reconstruction method, by using the result of filtered back-projection (FBP), a wide used algorithm of analytical reconstruction, to be an initial guess and the reference for the first iteration and each back projection stage respectively. Both two improvements can reduce the error between the forward projection of each iteration and the measurements. We use three methods of quantitative analysis, root-mean square error (RMSE), peak signal to noise ratio (PSNR), and structural content (SC), to show that our method can reduce the number of iterations by more than half and the duality of tie. result is better than the original ART.

引用

页数：6