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37,602 bulk items are available, covering 37,602 participants. Defined-instances run from 2 to 2, labelled using Instancing 2.
The values held within this field are coded links to files held within a bulk repository, not the actual data itself.
Counts of participants/items last updated 07 Sep 2019.
The DICOM images were acquired using the following parameters:
Resolution: 2x2x2 mm Field-of-view: 104x104x72 matrix Duration: 7 minutes (including 36 seconds phase-encoding reversed data) 10x b=0, 50x b=1000, 50x b=2000 SE-EPI with x3 multislice acceleration, no iPAT, fat saturation
For the two diffusion-weighted shells, 50 distinct diffusion-encoding directions were acquired (and all 100 directions are distinct). The diffusion prepraration is a standard ("monopolar") Stejskal-Tanner pulse sequence. This enables higher SNR due to a shorter echo time (TE=92ms) than than a twice-refocused ("bipolar") sequence. This improvement comes at the expense of stronger eddy current distortions, which are removed in the processed data available in NIFTI format.