MRI image reconstruction via new K-space sampling scheme based on separable transform

Ashkan Oliaiee, A. Ghaffari, E. Fatemizadeh
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Abstract

Reducing the time required for MRI, has taken a lot of attention since its inventions. Compressed sensing (CS) is a relatively new method used a lot to reduce the required time. Usage of ordinary compressed sensing in MRI imaging needs conversion of 2D MRI signal (image) to 1D signal by some techniques. This conversion of the signal from 2D to 1D results in heavy computational burden. In this paper, based on separable transforms, a method is proposed which enables the usage of CS in MRI directly in 2D case. By means of this method, imaging can be done faster and with less computational burden
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基于可分离变换的新k空间采样方案的MRI图像重建
减少核磁共振成像所需的时间,自发明以来就引起了很多关注。压缩感知(CS)是一种相对较新的方法,用于减少所需的时间。普通压缩感知在MRI成像中的应用,需要通过一定的技术将二维MRI信号(图像)转换为一维信号。这种从二维到一维的信号转换导致了沉重的计算负担。本文提出了一种基于可分变换的方法,使磁共振成像中的CS在二维情况下可以直接使用。采用这种方法,成像速度更快,计算量更少
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