Speed optimization of FDK reconstruction algorithm in computed tomography

被引：0

作者：

Li Baolei ^{[1
]}

Wei Dongbo ^{[1
]}

Li Junjiang ^{[1
]}

机构：

[1] Beihang Univ, Sch Mech Engn & Automat, Beijing 100083, Peoples R China

来源：

ISTM/2007: 7TH INTERNATIONAL SYMPOSIUM ON TEST AND MEASUREMENT, VOLS 1-7, CONFERENCE PROCEEDINGS | 2007年

关键词：

computed tomography; FDK reconstruction algorithm; speed optimization;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

For the cone-beam scanning CT (computed tomography), the FDK algorithm is currently main algorithm in actual engineering application in industry. In X-ray computed tomography, CT image reconstruction efficiency is very important. So, speed optimization of the FDK reconstruction algorithm is essential. In this paper, a series of strategies are presented to improve the speed of the FDK algorithm. The strategies include four parts: 1. The determination of the minimum reconstruction region; 2. Fast reconstruction using look-up table; 3. Fast reconstruction based on the symmetrical characteristic of the projection address; 4. Reading only necessary projection data into the computer memory. Using this series of strategies, If the speed is improved more than 20 times. At the same time, the precision of the CT image is preserved.

引用

页码：4590 / 4593

页数：4

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