dafni

Scanner - actual numbers from the day (2023/24)

2024-02-07, Denis Schluppeck

4 volunteers (sub-01 .. sub-04), scanned on the 3T GE scanner at the SPMIC QMC site. Scanner operator: AC. Start time 1400h.

(Data available via moodle link to a zip file on OneDrive).

For each person we obtained several scans. See json sidecar copied along for some details.

• T1w MPRAGE (1mm isotropic)
• T2w FLAIR (1mm isotropic)
• one or two repeats of an fMRI experiment (FFAlocaliser.m); 2.2mm isotropic, TR/TE 1500ms/35ms

fMRI experiment and timing

• the original scan was 168 timepoints long, but the first 8TRs (12s) were cut to allow for steady state.
• after removing these initial dummies, the time series is 160 timepoints long
• timing of the experiment is (Faces-rest-Obj-rest)*5)

12s ON (faces)
12s OFF (gray)

12s ON (objects)
12s OFF (gray)

... then each repeated for a total of 10 stimulus-rest blocks