Line-ratio based ring artifact correction method using transfer function

Daejoong Oh; Dosik Hwang; Younguk Kim

doi:10.1117/12.2217113

31 March 2016 Line-ratio based ring artifact correction method using transfer function

Daejoong Oh, Dosik Hwang, Younguk Kim

Proceedings Volume 9783, Medical Imaging 2016: Physics of Medical Imaging; 978335 (2016) https://doi.org/10.1117/12.2217113
Event: SPIE Medical Imaging, 2016, San Diego, California, United States

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.

Citation Download Citation

Daejoong Oh, Dosik Hwang, and 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); https://doi.org/10.1117/12.2217113

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