基于RAID系统和GPU技术的快速CT重建方法研究  

Research on Fast CT Reconstruction Method Based on RAID System and GPU

作　　者：刘俞辰[1] 

机构地区：[1]中北大学信息与通信工程学院,山西太原030051

出　　处：《山西电子技术》2016年第1期77-79,共3页Shanxi Electronic Technology

摘　　要：针对锥束CT三维重建算法存在数据量大,重建时间长的问题,提出了一种基于RAID存储系统和GPU共同加速锥束CT重建过程的方法。该方法先构建RAID存储系统,利用多个磁盘阵列并行读取投影数据,提高数据的载入时间;在此基础上,利用GPU技术来加速FDK重建算法,减少重建过程的时间。实验结果表明,在保证重建质量的前提下,本文提出的加速方法,相比于传统方法,速度提升约60倍。Aiming at the problems of large volumes of data and long reconstruction time existing in cone-beam CT three dimensional reconstruction algorithm, a new method based on RAID storage system and GPU is proposed to together accelerate the reconstruction process of cone-beam CT. Firstly, a RAID storage system is constructed to parallel read the prujection data with multiple disk arrays and shorten the time of loading data. Then, a GPU technology is used to accelerate FDK reconstruction algorithm to reduce the reconstruction time. The experimental resuhs show that the proposed acceleration method can develop the reconstruction speed about 60 times without compromising the reconstruction image quality compared with the traditional method.

关 键 词：独立磁盘冗余阵列 图形处理器 计算机断层重建 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]