电子测量与仪器学报

李长春,李元金.基于多阈值分割和 B 样条插值的 CT 图像金属伪影去除方法研究[J].电子测量与仪器学报,2020,34(7):128-132

基于多阈值分割和 B 样条插值的 CT 图像金属伪影去除方法研究

Research on metal artifacts reduction for CT image based on multi-threshold segmentation and B-spline interpolation

DOI：

英文关键词:multi-threshold segmentation B-spline interpolation median filter CT image metal artifacts reduction

基金项目:国家自然科学基金(2017YFC0107900)、安徽省教育厅重点研究项目(KJ2019A1136,KJ2018A0431)、安徽省高校优秀青年骨干人才国内外访学研修项目(gxfx2018077)、安徽省质量工程校企合作示范实训中心项目(2019xqsxzx31)资助

作者	单位
李长春	1. 滁州职业技术学院信息工程学院
李元金	2. 滁州学院计算机与信息工程学院

Author	Institution
Li Changchun	1. School of Information Engineering, Chuzhou Polytechnic University
Li Yuanjin	2. School of Computer and Information, Chuzhou University

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中文摘要:

为了解决重建后 CT(computed tomography)图像中出现的金属伪影问题,提出了基于多阈值分割和 B 样条插值的 CT 图像金属伪影去除方法。首先,介绍了 CT 图像中金属伪影产生的原因;然后详细剖析基于多阈值分割和 B 样条插值的 CT 图像金属伪影去除方法实施过程;最后,使用于基于多阈值分割和 B 样条插值的 CT 图像金属伪影去除方法对含有金属伪影的临床 CT 图像和模拟 phantom 图像进行实验。实验表明,提出的 CT 图像金属伪影去除方法能够有效地对 CT 图像中的金属伪影进行减少或去除,这将为医务工作诊断病灶提供了清晰的 CT 图像。

英文摘要:

To solve the problem of metal artifacts in reconstructed CT images, a method based on multi-threshold segmentation and B-spline interpolation is proposed to remove metal artifacts in CT images. Firstly, the causes of metal artifacts in CT images are introduced. Secondly, the implementation process of metal artifacts reduction method of CT image based on multi-threshold segmentation and B-spline interpolation is analyzed in detail. Finally, this approach is tested on clinical CT and simulated phantom images. Experiments show that the proposed metal artifact removal approach can effectively reduce or remove the metal artifacts in CT images, which provides clear CT images for the diagnosis of lesions in medical work.

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