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  • Cardiac Magnetic Resonance Imaging at 7 Tesla

    Author(s)
    Stab, Daniel
    Al Najjar, Aiman
    O'Brien, Kieran
    Strugnell, Wendy
    Richer, Jonathan
    Rieger, Jan
    Niendorf, Thoralf
    Barth, Markus
    Griffith University Author(s)
    Strugnell, Wendy
    Year published
    2019
    Metadata
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    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 ...
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    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.
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    Journal Title
    JoVe: Journal of Visualized Experiments
    Issue
    143
    DOI
    https://doi.org/10.3791/55853
    Subject
    Biochemistry and cell biology
    Cognitive and computational psychology
    Science & Technology
    Multidisciplinary Sciences
    Science & Technology - Other Topics
    Medicine
    Publication URI
    http://hdl.handle.net/10072/396607
    Collection
    • Journal articles

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