Keywords: Quantitative Imaging, Parallel Transmit & Multiband, NeuroQuantitative multi-parameter mapping (MPM) at 7T can provide detailed information about brain microstructure. However, it is limited by B1+ radio-frequency (RF) transmit field inhomogeneities leading to bias and dropouts. We implemented a kt-points RF pulse approach in 500µm resolution multi-echo spoiled GRE acquisitions and AFI B1+ mapping used for MPM. It was optimized for a homogeneous non-selective excitation with short RF pulse durations, SAR compliance and high usability. In a group of 8 volunteers, bias and shading artifacts were significantly reduced. The approach is integrated in the routine scanning workflow, improving whole brain ultra-high resolution MPM at 7T.
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