Medical Imaging Technology
Online ISSN : 2185-3193
Print ISSN : 0288-450X
ISSN-L : 0288-450X
Main Topics/Fundamentals and Status of Image Reconstruction in Medical Imaging
Overview of MRI Image Reconstruction
Tetsuhiko TAKAHASHIMasahiro TAKIZAWA
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JOURNAL FREE ACCESS

2013 Volume 31 Issue 1 Pages 26-31

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Abstract
MRI uses gradient magnetic field to add position information of spins on MR signals as modulation of frequency and/or phase. Observed MR signal is Fourier transformed from measurement space (k space) to real space (image). Before Fourier transform, processing such as base line correction, gridding are performed. After Fourier transform, processing such as distortion correction, shading correction are performed. Parallel imaging that uses characteristics of multiple RF receiving coils, are utilized to fast data acquisition.
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© 2013 The Japanese Society of Medical Imaging Technology
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