Potential and feasibility of parallel MRI at high field

This survey focuses on the fusion of two major lines of recent progress in MRI methodology: parallel imaging with receiver coil arrays and the transition to high and ultra‐high field strength for human applications. As discussed in this paper, combining the two developments has vast potential due to...

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Bibliographic Details
Published in:NMR in biomedicine 2006-05, Vol.19 (3), p.368-378
Main Authors: Wiesinger, Florian, Van de Moortele, Pierre-Francois, Adriany, Gregor, De Zanche, Nicola, Ugurbil, Kamil, Pruessmann, Klaas P.
Format: Article
Language:English
Subjects:
7 T
Algorithms
Electromagnetic Fields
Equipment Failure Analysis
Feasibility Studies
GRAPPA
high field
Humans
Image Enhancement - methods
Image Interpretation, Computer-Assisted - methods
Imaging, Three-Dimensional - instrumentation
Imaging, Three-Dimensional - methods
Information Storage and Retrieval - methods
Magnetic Resonance Imaging - instrumentation
Magnetic Resonance Imaging - methods
Magnetic Resonance Imaging - trends
Numerical Analysis, Computer-Assisted
parallel imaging
Reproducibility of Results
SENSE
Sensitivity and Specificity
Signal Processing, Computer-Assisted - instrumentation
SMASH
SNR
Technology Assessment, Biomedical
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Summary:This survey focuses on the fusion of two major lines of recent progress in MRI methodology: parallel imaging with receiver coil arrays and the transition to high and ultra‐high field strength for human applications. As discussed in this paper, combining the two developments has vast potential due to multiple specific synergies. First, parallel acquisition and high field are highly complementary in terms of their individual advantages and downsides. As a consequence, the joint approach generally offers enhanced flexibility in the design of scanning strategies. Second, increasing resonance frequency changes the electrodynamics of the MR signal in such a way that parallel imaging becomes more effective in large objects. The underlying conceptual and theoretical considerations are reviewed in detail. In further sections, technical challenges and practical aspects are discussed. The feasibility of parallel MRI at ultra‐high field is illustrated by current results of parallel human MRI at 7 T. Copyright © 2006 John Wiley & Sons, Ltd.
ISSN:0952-3480
1099-1492
DOI:10.1002/nbm.1050