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Feasibility Study of Block-Matching and 3D Filtering Algorithm in Low-Dose CT Image with Tin Filter

Authors
 Mingyu Song  ;  Minsu Kim  ;  Junsoo Lim  ;  Donghwan Chun  ;  Minji Park  ;  Jina Shim  ;  Youngjin Lee 
Citation
 JOURNAL OF MAGNETICS, Vol.28(1) : 56-63, 2023-03 
Journal Title
JOURNAL OF MAGNETICS
ISSN
 1226-1750 
Issue Date
2023-03
Abstract
The purpose of this study was to confirm the utility of block-matching and 3D filtering (BM3D) algorithm in computed tomography (CT) images using a tin filter with a high pitch. We acquired phantom images and measured the coefficient of variation (COV) and contrast-to-noise ratio (CNR) for quantitative evaluation. The optimized results were obtained when the sigma value of the BM3D algorithm was nine. In addition, when the sigma value of the optimized BM3D algorithm was applied, superior results were obtained compared with conventional filtering methods. In particular, we confirmed that the COV and CNR of the images obtained using the BM3D algorithm improved 6.52 and 5.49 times, respectively. In conclusion, the utility of the optimized BM3D algorithm has been demonstrated in low-dose CT images using a tin filter.
Files in This Item:
T992023358.pdf Download
DOI
10.4283/JMAG.2023.28.1.056
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Oral and Maxillofacial Radiology (영상치의학교실) > 1. Journal Papers
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/199623
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