Fast, iterative image reconstruction for MRI in the presence of field inhomogeneities.

In magnetic resonance imaging, magnetic field inhomogeneities cause distortions in images that are reconstructed by conventional fast Fourier transform (FFT) methods. Several noniterative image reconstruction methods are used currently to compensate for field inhomogeneities, but these methods assum...

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Publié dans:	IEEE Transactions on medical imaging 22, 2 (2003).
Auteur principal:	Sutton, B.P
Format:	Article
Langue:	English
Sujets:	MR signal equation. MRI. Fast iterative image reconstruction. Field map. Field-corrected MR images. Image distortions. Magnetic field inhomogeneities. Magnetic resonance imaging. Min-max formulation. Noniterative image reconstruction methods. Nonuniform fast Fourier transform. Normalized root mean squared approximation errors. Off-resonance frequencies. Spatially smooth field map. Temporal interpolator. Time-segmented approximation.