In this work, a whole-brain 4D-pcASL angiography sequence exploiting a radial density-adapted gradient echo readout with golden angle sampling was implemented and evaluated on a 7T system. Various parallel transmission (pTx) strategies were compared to the standard circularly polarized mode: To counteract low transmit efficiency in the labeling, B1+-shimming was used in combination with a full spiral-nonselective pTx-optimized readout train. Further, constant flip angle pTx-excitations in the readout were compared to pTx-pulses that were ramped from 3.5° to 6.5° using a linear scaling factor. This ramped readout strategy outperforms constant flip angles and reveals more of the vascular tree
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