Design of CT image reconstruction acceleration based on FPGA

ZHANG Xiao-meng; ZHANG Tao

doi:10.3788/YJYXS20142903.0455

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Design of CT image reconstruction acceleration based on FPGA

更新时间：2020-08-12

- Design of CT image reconstruction acceleration based on FPGA
- Chinese Journal of Liquid Crystals and Displays Vol. 29, Issue 3, Pages: 455-460(2014)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 中国科学院大学, 北京 100049
  3. 中国科学院苏州生物医学工程技术研究所, 江苏苏州 215163
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20142903.0455
  CLC： TP391.41
- Received：02 August 2013，
  
  Revised：14 September 2013，
  
  Published Online：08 October 2013，
  
  Published：25 April 2014
- 稿件说明：
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张晓梦, 张涛. 基于FPGA实现CT图像重建加速的设计[J]. 液晶与显示, 2014,29(3): 455-460

ZHANG Xiao-meng, ZHANG Tao. Design of CT image reconstruction acceleration based on FPGA[J]. , 2014,29(3): 455-460
张晓梦, 张涛. 基于FPGA实现CT图像重建加速的设计[J]. 液晶与显示, 2014,29(3): 455-460 DOI： 10.3788/YJYXS20142903.0455.

ZHANG Xiao-meng, ZHANG Tao. Design of CT image reconstruction acceleration based on FPGA[J]. , 2014,29(3): 455-460 DOI： 10.3788/YJYXS20142903.0455.

摘要

为满足CT图像重建系统的实时处理要求，提出了一种基于FPGA实现CT图像重建的加速方法。首先将滤波反投影算法进行并行性分解，然后采用并行流水线设计思想，给出了算法在FPGA上实现的总体结构，并且分别给出滤波、反投影、循环累加等主要功能单元的电路设计，最后在FPGA上实现了12条并行流水线重建系统。实验结果表明，与基于CPU的图像重建相比较，基于FPGA的重建系统重建出的图像绝对误差小于0.4%，加速比在100倍以上，且重建图像的规模越大，加速效果越明显。

Abstract

To fulfill the real-time processing requirement of computerized tomography image reconstruction

a FPGA-based accelerated CT image reconstruction method was proposed. Firstly

filtering projection algorithm was broken down by parallelism.Then the FPGA-based processing structure was proposed by using the parallel pipeline technology

and the designs of the main units of the method were discussed

including the designs of the filter

back-projection

and accumulation.Lastly

the system which includes 12 parallel processing pipelines was implemented on FPGA. The simulation results showed that

compared with the CPU reconstruction

the FPGA-based reconstruction achieved that reconstruction absolute error is less than 0.4% and the speedup ratio is more than 100

its speedup effect is more obvious when it is applied to larger amount of reconstructed image.

关键词

Keywords

references

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