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Fast computation of projection image based on the repeated patterns of intersection between ray and voxel

Title
Fast computation of projection image based on the repeated patterns of intersection between ray and voxel
Authors
Lee H.Kim J.
Ewha Authors
김정태
SCOPUS Author ID
김정태scopus
Issue Date
2017
Journal Title
Transactions of the Korean Institute of Electrical Engineers
ISSN
1975-8359JCR Link
Citation
Transactions of the Korean Institute of Electrical Engineers vol. 66, no. 6, pp. 942 - 948
Keywords
Iterative image reconstructionLow dose CTProjectionRay-tracing
Publisher
Korean Institute of Electrical Engineers
Indexed
SCOPUS; KCI scopus
Document Type
Article
Abstract
Ray-tracing based method for computing projection image calculates the exact amounts of the intersection between voxels and a ray. Among several different implementations of the ray tracing based methods, Siddon's method is the earliest one. Later faster implementation such as Jacobs's method, Zhao's method, were investigated. To our knowledge, Zhao's method is the fastest one among these. We improve the speed of the Zhao's method by predicting the number of the same intersection length between voxel and a ray. In our experiment, the proposed method showed significantly faster computation speed than Zhao's method. Copyright © The Korean Institute of Electrical Engineers.
DOI
10.5370/KIEE.2017.66.6.942
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
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