ArticleMagnetic resonance in medicine2026
Calibration-Free GRAPE pTx Pulses for Homogeneous Spatial-Selective Excitation at 7T.
Article in Magnetic resonance in medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeExtend the universal pulse GRAPE formalism to pulses with a defined spectral response, and apply the concept to spatial selection.
methodsWe added Bloch simulations at several frequencies for each voxel to the pulse calculation to create universal spectrally-selective GRAPE pulses. With a superimposed constant gradient field spatial selection was achieved. The method was tested in slice- and slab-selective imaging experiments.
resultsUniversal spatially-selective GRAPE pulses increased FA homogeneity and SNR. In 2D gradient echoes, the SNR could be increased by approximately 6% compared to CP pulses, and in a slab-selective TSE sequence, the SNR increased by 29% against k
conclusionSpatially-selective universal GRAPE pulses exhibit superior performance compared to k
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