Fast computation of projection image based on the repeated patterns of intersection between ray and voxel
- 주제(키워드) Iterative image reconstruction , Low dose CT , Projection , Ray-tracing
- 등재 SCOPUS, KCI등재
- 발행기관 Korean Institute of Electrical Engineers
- 발행년도 2017
- URI http://www.dcollection.net/handler/ewha/000000156078
- 본문언어 한국어
- Published As http://dx.doi.org/10.5370/KIEE.2017.66.6.942
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
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.
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