Bruno Pinho-Meneses1 and Alexis Amadon1
1Université Paris-Saclay, CEA, CNRS, BAOBAB, NeuroSpin, Gif-sur-Yvette, France
1Université Paris-Saclay, CEA, CNRS, BAOBAB, NeuroSpin, Gif-sur-Yvette, France
The
Spherical Harmonic Rating, a new, robust metric for B0 shim system
evaluation was proposed and analyzed, showing invariant features across
distinct databases lacking in usual standard deviation and relative inhomogeneity
reduction metrics.
Figure 3: Shimming simulation results, presented with
different metrics, on both fieldmap databases for different shim systems.
Figure 2: MCAs
designed over a 300-mm length, 280-mm diameter cylindrical coil former. a) Matrix
MCAs of 24 and 48 channels; b) and c) SVD-based MCA design. From left to right:
first layer with 24 channels, second layer with 12 channels and full 2-layer
36-channel shim system; b) Low bias and c) High bias.
