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Proceedings Paper

Line-ratio based ring artifact correction method using transfer function
Author(s): Daejoong Oh; Dosik Hwang; Younguk Kim
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Paper 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.

Paper Details

Date Published: 31 March 2016
PDF: 11 pages
Proc. SPIE 9783, Medical Imaging 2016: Physics of Medical Imaging, 978335 (31 March 2016); doi: 10.1117/12.2217113
Show Author Affiliations
Daejoong Oh, Yonsei Univ. (Korea, Republic of)
Dosik Hwang, Yonsei Univ. (Korea, Republic of)
Younguk Kim, Yonsei Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 9783:
Medical Imaging 2016: Physics of Medical Imaging
Despina Kontos; Thomas G. Flohr, Editor(s)

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