-
#Layer_fMRI_Artifact_of_the_Week: Vessel noise. Even though these sub-millimeter voxels are mostly limited by thermal noise, the physiological noise can still matter in resting-state analysis pipelines pic.twitter.com/5Jr6rl0v8Y -
#Layer_fMRI_Artifact_of_the_Week: GRAPPA ghosts in EPI as a function of bandwidth. The EPI ramp-sampling ratio matters more than the acoustic resonances. pic.twitter.com/y1giOirjju -
#Layer_fMRI_Artifact_of_the_Week: Assuming a smooth cortical curvature in segmentation methods give nice looking images, but it introduces biases in layer-fMRI. Layers are shifted towards CSF in bottom of sulcus and towards WM at crown on gyrus. pic.twitter.com/odqy3Hop89 -
Another support that Boundary Based Registration can be advantageous for motion correction in layer-fMRI. NeuroImage paper from Cambridge 7T Terra: https://doi.org/10.1016/j.neuroimage.2020.116542 …
#Layer_fMRI_Artifact_of_the_Week pic.twitter.com/weg4X7v4EH -
#Layer_fMRI_Artifact_of_the_Week: tSNR edge artifact in SMS. Since neighbouring voxels are aliased from non-neighbouring locations, tSNR has sharp edges. Example data from the new shiny Terra in Korea, thnx@insekimpic.twitter.com/H1dOI6cc7O
-
#Layer_fMRI_Artifact_of_the_Week: Fold-over fat signal with MP2RAGE. More MP2GARE layer-fMRI artifact are here: https://layerfmri.com/mp2rage/ pic.twitter.com/FWkpORaNWb -
I agree, there is no artifact here. It really just depends on the exact choice of TI/TR.
#Layer_fMRI_Artifact_of_the_Week pic.twitter.com/8lbpZtm3He
Čini se da učitavanje traje već neko vrijeme.
Twitter je možda preopterećen ili ima kratkotrajnih poteškoća u radu. Pokušajte ponovno ili potražite dodatne informacije u odjeljku Status Twittera.