Title :
Parallel computation of fan-beam back-projection reconstruction algorithm in computed tomography
Author :
Lin, Wen-Tai ; Ho, Chung-Yih ; Chin, Chi-Yuan
Author_Institution :
General Electric Co., Schenectady, NY, USA
Abstract :
A method for parallelizing the image reconstruction of a fan beam computed tomography (CT) scanner and a processor array adapted for computing the back-projection reconstruction algorithm (BPR) are presented. By making use of some inherent parallelism in PBR, a modular ring architecture in multiple of eight processors is shown to be well suited for a class of CT algorithms. The parallel architecture encompasses a reconfigurable binary tree to accommodate a wide range of processor interconnections needed for different image-processing schemes, ranging from front-end filtering, calibration, and fast Fourier transform to postprocessing such as artifact removal and image compression
Keywords :
computerised picture processing; computerised tomography; fast Fourier transforms; parallel algorithms; parallel architectures; CT algorithms; artifact removal; calibration; computed tomography; fan-beam back-projection reconstruction algorithm; fast Fourier transform; front-end filtering; image reconstruction; image-processing schemes; inherent parallelism; modular ring architecture; parallel architecture; processor array; reconfigurable binary tree; Adaptive arrays; Bioreactors; Business process re-engineering; Computed tomography; Computer architecture; Concurrent computing; Image reconstruction; Parallel architectures; Parallel processing; Reconstruction algorithms;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112545
