Keywords: High-Field MRI, High-Field MRI, 7T, 3DTOF, Non-contrast MRA, High gradient performance, microvascular
Motivation: Non-contrast 3DTOF demonstrates visualizing the cerebral microvasculature at 7T MRI, but the scan time is too long, typically about 10 minutes due to requiring high spatial resolution.
Goal(s): Our goal was to reduce the acquisition time by a factor of 2.
Approach: We utilize FLEXA on the high gradient performance system at 7T.
Results: Comparable image quality to 3DTOF was obtained with FLEXA technique with a factor of 2 decrease in acquisition time.
Impact: The improvement in acquisition speed through FLEXA comes from the strategy of short TR with thin slab and opens new standard for scan protocol optimization at 7T MRA.
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