Steen Moeller1, Cheryl Olman2, Luca vizioli1, Logan Dowdle1, Essa Yacoub1, Mehmet Akcakaya1,3, and Kamil Ugurbil1
1University of Minnesota, MINNEAPOLIS, MN, United States, 2Psychology, University of Minnesota, MINNEAPOLIS, MN, United States, 3ELECTRICAL AND COMPUTER ENGINEERING, University of Minnesota, Minneapolis, MN, United States
1University of Minnesota, MINNEAPOLIS, MN, United States, 2Psychology, University of Minnesota, MINNEAPOLIS, MN, United States, 3ELECTRICAL AND COMPUTER ENGINEERING, University of Minnesota, Minneapolis, MN, United States
NORDIC (LLR PCA) is directly compatible with undersampled k-space data
Figure 4. GLM for a 4 block-design scan. Voxels significantly modulated by stimulus presentation in the occipital cortex with (p < 0.001) after cluster-based correction for multiple comparisons. Statistical analysis was performed with a GLM from 4 block-design scans (11 12-sec blocks of visual stim interleaved with 10 12-sec blocks of rest). The GLM regressors were formed by convolution of boxcar representing stimulus presentation with a simple gamma function $$$g(t) = t^q \cdot e^{-t} / (q^q \cdot e^{-q}), q=4 $$$
Figure 3. Channel dependent impact of NORDIC applied before GRAPPA reconstruction
with R=3 for a single channel covering a sagittal slice through
the occipital lobe.