Journal ArticleDOI
Dynamically adaptive MRI with encoding by singular value decomposition
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TLDR
A new MRI spatial encoding method based upon the singular value decomposition (SVD) and using spatially selective RF excitation is described, which provides a near minimal set of spatial encoding profiles computed using an image estimate that is determined from a previously obtained image.Abstract:
A new MRI spatial encoding method based upon the singular value decomposition (SVD) and using spatially selective RF excitation is described. This encoding technique is particularly applicable to dynamic adaptive MRI, because it provides a near minimal set of spatial encoding profiles computed using an image estimate that is determined from a previously obtained image. Experimental results are presented for two cases, which exemplify its potential use in different dynamic imaging tasks. SVD-encoded MRI has demonstrated to be a highly efficient encoding scheme.read more
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Unaliasing by fourier-encoding the overlaps using the temporal dimension (UNFOLD), applied to cardiac imaging and fMRI.
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Proceedings ArticleDOI
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PatentDOI
Parallel magnetic resonance imaging
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Journal ArticleDOI
Real-time interactive MRI on a conventional scanner.
Adam B. Kerr,John M. Pauly,Bob S. Hu,King C.P. Li,Christopher J. Hardy,Ciraig H. Meyer,Albert Macovski,Dwight G. Nishimura +7 more
TL;DR: A real-time interactive MRI system capable of localizing coronary arteries and imaging arrhythmic hearts in real‐time is described, and rapid localization in the abdomen is demonstrated with the spiral‐ring acquisition, whereas peristaltic motion in the small bowel is well visualized using the circular echo‐planar sequence.
Journal ArticleDOI
SVD Compression for Magnetic Resonance Fingerprinting in the Time Domain
Debra McGivney,Eric Y. Pierre,Dan Ma,Yun Jiang,Haris Saybasili,Vikas Gulani,Mark A. Griswold +6 more
TL;DR: By compressing the size of the dictionary in the time domain, this work is able to speed up the pattern recognition algorithm, by a factor of between 3.4-4.8, without sacrificing the high signal-to-noise ratio of the original scheme presented previously.
References
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Journal ArticleDOI
Numerical Recipes, The Art of Scientific Computing
Journal ArticleDOI
Singular value decomposition and least squares solutions
Gene H. Golub,C. Reinsch +1 more
TL;DR: The decomposition of A is called the singular value decomposition (SVD) and the diagonal elements of ∑ are the non-negative square roots of the eigenvalues of A T A; they are called singular values.
Journal ArticleDOI
RARE imaging: a fast imaging method for clinical MR.
TL;DR: Based on the principles of echo imaging, a method is proposed to acquire sufficient data for a 256 × 256 image in from 2 to 40s, and the signal amplitudes of structures with long T2 are nearly the same as those in a conventional 2D FT experiment.
Journal ArticleDOI
Functional mapping of the human visual cortex by magnetic resonance imaging
John W. Belliveau,David N. Kennedy,Robert C. McKinstry,Bradley R. Buchbinder,Robert M. Weisskoff,Mark S. Cohen,James M. Vevea,Thomas J. Brady,Bruce R. Rosen +8 more
TL;DR: This technique was used to generate the first functional magnetic resonance maps of human task activation, by using a visual stimulus paradigm, and localized increases in blood volume were detected in the primary visual cortex during photic stimulation.