منابع مشابه
Multicompartment Magnetic Resonance Fingerprinting
Magnetic resonance fingerprinting (MRF) is a technique for quantitative estimation of spinrelaxation parameters from magnetic-resonance data. Most current MRF approaches assume that only one tissue is present in each voxel, which neglects the tissue’s microstructure, and may lead to artifacts in the recovered parameter maps at boundaries between tissues. In this work, we propose a multicompartm...
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Understanding the need Quantitative vs Qualitative MRI data: The vast majority of common clinical MRI protocols rely on qualitative images reflecting the weighted effect of different tissue parameters. These contrast parameters include relaxation times, principally T1, T2 and T2*, as well as structural or functional quantities such as diffusion and blood flow. The absolute level of the signal v...
متن کاملMagnetic Resonance Fingerprinting by exploiting Low Rank
Magnetic Resonance Fingerprinting (MRF) is a relatively new approach that provides quantitative MRI measures using randomized acquisition. Extraction of physical quantitative tissue parameters is performed off-line, based on acquisition with varying parameters and a dictionary generated according to the Bloch equations. MRF uses hundreds of radio frequency (RF) excitation pulses for acquisition...
متن کامل3D Magnetic Resonance Fingerprinting with a Clustered Spatiotemporal Dictionary
We present a method for creating a spatiotemporal dictionary for magnetic resonance fingerprinting (MRF). Our technique is based on the clustering of multi-parametric spatial kernels from training data and the posterior simulation of a temporal fingerprint for each voxel in every cluster. We show that the parametric maps estimated with a clustered dictionary agree with maps estimated with a ful...
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ژورنال
عنوان ژورنال: Nature
سال: 2013
ISSN: 0028-0836,1476-4687
DOI: 10.1038/nature11971