... 相位恢复； 伪影校正； 磁共振成像； 平移运动 [gap=1329]Key words: motion artifact; phase retrieval; artifact correction; magnetic resonance imaging; translation motion ..
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CT图像伪影校正 correction of CT image artifacts
A software method based on the reference scan is proposed for MRI phase artifact correction. Firstly,the reference scan without frequency encoding gradient and phase encoding gradient is executed,and an echo train is acquired.
基于参考扫描原理提出了一种MRI(Magnetic resonance imaging)相位伪影的软件校正方法,首先进行一次不加频率编码梯度和相位编码梯度的参考扫描,将获得的回波链数据沿频率编码方向做傅里叶变换后求出各回波间的相位误差,由此建立相位误差补偿矩阵,对K空间数据进行校正,最后重建得到伪影校正后的图像。
参考来源 - 一种基于参考扫描的MRI相位伪影校正方法·2,447,543篇论文数据，部分数据来源于NoteExpress
针对金属伪影，提出一种快速而稳定的校正方法。
In this paper, a fast method for metal artifacts reduction is proposed.
金属伪影的校正已成为CT技术中的研究难点和热点。
Correction method of metal artifacts has become the hot and difficult issue of ct technique.
为抑制计算机层析造影（CT）系统重建图像中出现的金属伪影，提高图像的质量，采用一种基于金属投影非线性权重衰减的方法进行校正。
A metal artifacts reduction method using nonlinear weights was developed to suppress metal artifacts in X-ray CT(computerized tomography) images to improve the image quality.
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