Keywords: Pulse Sequence Design, High-Field MRI, High-performance gradients
Motivation: To push high-performance head gradients at 7T for two extreme ends of the spatiotemporal spectrum, namely ultra-fast and ultra-high-resolution whole-brain imaging.
Goal(s): To explore exceptionally fast gradient switching times and amplitudes for most efficient imaging using highly-accelerated segmented 3D-EPI.
Approach: Whole-brain time series with frame rates up to 90ms per volume (3mm isotropic resolution) and anatomical T2*-weighted images with 350 microns isotropic voxels (within 3.5 minutes) were acquired and used for venography, SWI and quantitative imaging.
Results: 1.) Fast and tSNR-efficient time series acquisitions and 2.) ultra-high-resolution whole-brain anatomical images and quantitative maps are demonstrated.
Impact: Utilizing highly-accelerated segmented 3D-EPI with high-performance head gradients at 7T, ultra-fast whole-brain fMRI protocols (up to 90ms per volume at 3mm isotropic) and ultra-high-resolution whole-brain anatomical/quantitative imaging with negligible motion blur (350 microns isotropic within 3.5 minutes) become possible.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords