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Journal of Visualized Experiments
Article . 2019 . Peer-reviewed
Data sources: Crossref
Journal of Visualized Experiments
Article . 2019 . Peer-reviewed
Data sources: Crossref
UQ eSpace
Article . 2019
Data sources: UQ eSpace
UQ eSpace
Article . 2019
Data sources: UQ eSpace
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Cardiac Magnetic Resonance Imaging at 7 Tesla

Authors: Stäb, Daniel; Al Najjar, Aiman; O'Brien, Kieran; Strugnell, Wendy; Richer, Jonathan; Rieger, Jan; Niendorf, Thoralf; +1 Authors

Cardiac Magnetic Resonance Imaging at 7 Tesla

Abstract

CMR at an ultra-high field (magnetic field strength B0 ≥ 7 Tesla) benefits from the signal-to-noise ratio (SNR) advantage inherent at higher magnetic field strengths and potentially provides improved signal contrast and spatial resolution. While promising results have been achieved, ultra-high field CMR is challenging due to energy deposition constraints and physical phenomena such as transmission field non-uniformities and magnetic field inhomogeneities. In addition, the magneto-hydrodynamic effect renders the synchronization of the data acquisition with the cardiac motion difficult. The challenges are currently addressed by explorations into novel magnetic resonance technology. If all impediments can be overcome, ultra-high field CMR may generate new opportunities for functional CMR, myocardial tissue characterization, microstructure imaging or metabolic imaging. Recognizing this potential, we show that multi-channel radio frequency (RF) coil technology tailored for CMR at 7 Tesla together with higher order B0 shimming and a backup signal for cardiac triggering facilitates high fidelity functional CMR. With the proposed setup, cardiac chamber quantification can be accomplished in examination times similar to those achieved at lower field strengths. To share this experience and to support the dissemination of this expertise, this work describes our setup and protocol tailored for functional CMR at 7 Tesla.

Country
Australia
Keywords

2800 Neuroscience, Design, 1300 Biochemistry, 1500 Chemical Engineering, Radio Waves, Genetics and Molecular Biology, Coil, Signal-To-Noise Ratio, 1300 Biochemistry, Genetics and Molecular Biology, Humans, Cognitive and computational psychology, Science & Technology, Fields, Myocardium, 2400 Immunology and Microbiology, 600, Feasibility, Heart, Ssfp, Quality, Magnetic Resonance Imaging, Multidisciplinary Sciences, Acquisition, Magnetic Fields, Biochemistry and cell biology, 1.5 T, Progress, Science & Technology - Other Topics, Medicine, Mri

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    popularity
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    Top 10%
    influence
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Top 10%
Average
Average
Green