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

页数：11

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