中国组织工程研究

中国组织工程研究 ›› 2011, Vol. 15 ›› Issue (4): 660-662.doi: 10.3969/j.issn.1673-8225.2011.04.021

• 骨与关节图像与影像 bone and joint imaging • 上一篇    下一篇

基于一种改进的相位校正算法消除MRI运动伪影

邓  羽，黄  华   

  1. 四川大学电气信息学院，四川省成都市  610065
  • 收稿日期:2010-10-13 修回日期:2010-11-09 出版日期:2011-01-22 发布日期:2011-01-22
  • 通讯作者: 黄华，博士，教授，四川大学电气信息学院，四川省成都市 610065
  • 作者简介:邓羽，女，1986年生，四川省成都市人，汉族，2009年四川大学毕业，主要从事医学信号及图像处理方向的研究。 86yu11@163. com

MRI motion artifact cancel based on an improved phase correction algorithm

Deng Yu, Huang Hua   

  1. School of Electrical Engineering and Information, Sichuan University, Chengdu 610065, Sichuan Province, China
  • Received:2010-10-13 Revised:2010-11-09 Online:2011-01-22 Published:2011-01-22
  • Contact: Huang Hua, Doctor, Professor, School of Electrical Engineering and Information, Sichuan University, Chengdu 610065, Sichuan Province, China
  • About author:Deng Yu, School of Electrical Engineering and Information, Sichuan University, Chengdu 610065, Sichuan Province, China 86yu11@163.com

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439

被引次数

2

摘要：

背景：近年来，MRI由于具有高的空间分辨率和软组织对比度，在临床上的运用越来越广泛。但是其成像时间较长，所以容易受到患者身体运动的影响，产生运动伪影。
目的：去除MRI图像成像时产生的伪影，改善图像质量。
方法：使用改进的相位矫正算法，并结合水平集算法去除图像伪影。去除伪影后使用模糊增强改善处理后图像的质量。
结果与结论：实验证明使用改进的相位矫正算法得到的图像比使用原始的相位矫正算法得到的图像效果更加理想。

关键词: MRI运动伪影, K空间, 相位校正算法, 水平集算法, 模糊增强

Abstract:

BACKGROUND: At present, magnetic resonance imaging (MRI) has been extensively clinically used due to high spatial resolution and contrast of soft tissue. However, the imaging time is very long, and it is vulnerable to the impact of patient’s body movement, resulting in motion artifact.
OBJECTIVE: To eliminate MRI motion artifact and improve image quality.
METHODS: MRI motion artifact was canceled with phase correction algorithm and level set algorithm. Image quality was enhanced after cancelling artifact with fuzzy enhancement algorithm.
RESULTS AND CONCLUSION: Results proved that the images obtained by improved phase correction algorithm are better than those by original phase correction algorithm.

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