Abstract:
:In this work, we show that it is possible to overcome the limitations of solid-state MRI for rigid tissues due to large line broadening and short dephasing times by combining Magic Angle Spinning (MAS) with rotating pulsed field gradients. This allows recording ex vivo 31P 3D and 2D slice-selected images of rigid tissues and related biomaterials at very high magnetic field, with greatly improved signal to noise ratio and spatial resolution when compared to static conditions. Cross-polarization is employed to enhance contrast and to further depict spatially localized chemical variations in reduced experimental time. In these materials, very high magnetic field and moderate MAS spinning rate directly provide high spectral resolution and enable the use of frequency selective excitation schemes for chemically selective imaging. These new possibilities are exemplified with experiments probing selectively the 3D spatial distribution of apatitic hydroxyl protons inside a mouse tooth with attached jaw bone with a nominal isotropic resolution nearing 100 µm.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Yon M,Sarou-Kanian V,Scheler U,Bouler JM,Bujoli B,Massiot D,Fayon Fdoi
10.1038/s41598-017-08458-0subject
Has Abstractpub_date
2017-08-15 00:00:00pages
8224issue
1issn
2045-2322pii
10.1038/s41598-017-08458-0journal_volume
7pub_type
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