AUTHOR=Zhu He , Moser Ewald TITLE=Editorial: In Vivo Magnetic Resonance at Ultra High Field JOURNAL=Frontiers in Physics VOLUME=5 YEAR=2017 URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2017.00045 DOI=10.3389/fphy.2017.00045 ISSN=2296-424X