31 March 2016 Line-ratio based ring artifact correction method using transfer function
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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.
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Daejoong Oh, Daejoong Oh, Dosik Hwang, Dosik Hwang, Younguk Kim, Younguk Kim, } "Line-ratio based ring artifact correction method using transfer function", Proc. SPIE 9783, Medical Imaging 2016: Physics of Medical Imaging, 978335 (31 March 2016); doi: 10.1117/12.2217113; https://doi.org/10.1117/12.2217113
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