This work enhances the quality of non-contrast enhanced time-resolved 4-dimensional MR angiography (4D-MRA) at 7T, by combining segmented multi-phase acquisition of the FAIR scheme with labeling pulses of improved robustness to B1/B0 inhomogeneity and chemical shift. The gradient-modulated offset independent inversion pulses were optimized for 7T application maximizing MR system performance, while providing uniform inversion, sharp transition and tolerance to chemical shift. 4D-MRA images with higher spatial-temporal resolution were reliably acquired within SAR limit of normal operation mode within 5 minutes, presenting a valuable tool for assessing intracranial vasculature and hemodynamics.
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