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.
|Title of host publication||Medical Imaging 2016|
|Subtitle of host publication||Physics of Medical Imaging|
|Editors||Despina Kontos, Joseph Y. Lo, Thomas G. Flohr|
|Publication status||Published - 2016|
|Event||Medical Imaging 2016: Physics of Medical Imaging - San Diego, United States|
Duration: 2016 Feb 28 → 2016 Mar 2
|Name||Progress in Biomedical Optics and Imaging - Proceedings of SPIE|
|Other||Medical Imaging 2016: Physics of Medical Imaging|
|Period||16/2/28 → 16/3/2|
Bibliographical notePublisher Copyright:
© 2016 SPIE.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Radiology Nuclear Medicine and imaging