Line-ratio based ring artifact correction method using transfer function

被引：6
|
作者：
Oh, Daejoong [1 ]
Hwang, Dosik [1 ]
Kim, Younguk [1 ]
机构：
[1] Yonsei Univ, Sch Elect & Elect Engn, 50 Yonsei Ro, Seoul 03722, South Korea
来源：
MEDICAL IMAGING 2016: PHYSICS OF MEDICAL IMAGING | 2016年 / 9783卷
关键词：
Computed Tomography; Ring artifact;
D O I：
10.1117/12.2217113
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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.
引用
收藏
页数：11
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