TY  - JOUR
AU  - Löwen, Daniel
AU  - Pracht, Eberhard D
AU  - Veldmann, Marten
AU  - Gras, Vincent
AU  - Mauconduit, Franck
AU  - Boulant, Nicolas
AU  - Stöcker, Tony
TI  - Calibration-Free GRAPE pTx Pulses for Homogeneous Spatial-Selective Excitation at 7T.
JO  - Magnetic resonance in medicine
VL  - 95
IS  - 6
SN  - 1522-2594
CY  - New York, NY [u.a.]
PB  - Wiley-Liss
M1  - DZNE-2026-00360
SP  - 3104 - 3115
PY  - 2026
AB  - Extend the universal pulse GRAPE formalism to pulses with a defined spectral response, and apply the concept to spatial selection.We 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.Universal spatially-selective GRAPE pulses increased FA homogeneity and SNR. In 2D gradient echoes, the SNR could be increased by approximately 6
KW  - Phantoms, Imaging
KW  - Humans
KW  - Algorithms
KW  - Magnetic Resonance Imaging: methods
KW  - Signal-To-Noise Ratio
KW  - Calibration
KW  - Image Processing, Computer-Assisted: methods
KW  - Computer Simulation
KW  - Brain: diagnostic imaging
KW  - GRAPE (Other)
KW  - parallel transmission (Other)
KW  - ultra‐high field (Other)
KW  - universal pulses (Other)
LB  - PUB:(DE-HGF)16
C6  - pmid:41588662
C2  - pmc:PMC13049268
DO  - DOI:10.1002/mrm.70266
UR  - https://pub.dzne.de/record/285914
ER  -