Line-ratio based ring artifact correction method using transfer function

Daejoong Oh; Dosik Hwang; Younguk Kim

doi:10.1117/12.2217113

Line-ratio based ring artifact correction method using transfer function

Daejoong Oh, Dosik Hwang, Younguk Kim

Department of Electrical and Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Computed tomography (CT) has been used for medical purposes. However there are many artifacts at CT images and that makes distorted image. Ring artifact is caused by non-uniform sensitivity of detectors and makes ring shape artifact. Line-ratio method was proposed to solve the problem however there are some problem at specific case. Therefore we propose advanced method to correct ring artifact using transfer function. As a result, ring artifacts can be removed at more global cases. Simulation data shows the proposed method outperforms the conventional line-ratio method.

Original language	English
Title of host publication	Medical Imaging 2016
Subtitle of host publication	Physics of Medical Imaging
Editors	Despina Kontos, Joseph Y. Lo, Thomas G. Flohr
Publisher	SPIE
ISBN (Electronic)	9781510600188
DOIs	https://doi.org/10.1117/12.2217113
Publication status	Published - 2016 Jan 1
Event	Medical Imaging 2016: Physics of Medical Imaging - San Diego, United States Duration: 2016 Feb 28 → 2016 Mar 2

Publication series

Name	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	9783
ISSN (Print)	1605-7422

Other

Other	Medical Imaging 2016: Physics of Medical Imaging
Country	United States
City	San Diego
Period	16/2/28 → 16/3/2

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Biomaterials
Radiology Nuclear Medicine and imaging

Access to Document

10.1117/12.2217113

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Oh, D., Hwang, D., & Kim, Y. (2016). Line-ratio based ring artifact correction method using transfer function. In D. Kontos, J. Y. Lo, & T. G. Flohr (Eds.), Medical Imaging 2016: Physics of Medical Imaging [978335] (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 9783). SPIE. https://doi.org/10.1117/12.2217113

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Oh, D, Hwang, D & Kim, Y 2016, Line-ratio based ring artifact correction method using transfer function. in D Kontos, JY Lo & TG Flohr (eds), Medical Imaging 2016: Physics of Medical Imaging., 978335, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 9783, SPIE, Medical Imaging 2016: Physics of Medical Imaging, San Diego, United States, 16/2/28. https://doi.org/10.1117/12.2217113

Line-ratio based ring artifact correction method using transfer function. / Oh, Daejoong; Hwang, Dosik; Kim, Younguk.

Medical Imaging 2016: Physics of Medical Imaging. ed. / Despina Kontos; Joseph Y. Lo; Thomas G. Flohr. SPIE, 2016. 978335 (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 9783).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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N2 - Computed tomography (CT) has been used for medical purposes. However there are many artifacts at CT images and that makes distorted image. Ring artifact is caused by non-uniform sensitivity of detectors and makes ring shape artifact. Line-ratio method was proposed to solve the problem however there are some problem at specific case. Therefore we propose advanced method to correct ring artifact using transfer function. As a result, ring artifacts can be removed at more global cases. Simulation data shows the proposed method outperforms the conventional line-ratio method.

AB - Computed tomography (CT) has been used for medical purposes. However there are many artifacts at CT images and that makes distorted image. Ring artifact is caused by non-uniform sensitivity of detectors and makes ring shape artifact. Line-ratio method was proposed to solve the problem however there are some problem at specific case. Therefore we propose advanced method to correct ring artifact using transfer function. As a result, ring artifacts can be removed at more global cases. Simulation data shows the proposed method outperforms the conventional line-ratio method.

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