Hi FSL experts,
We are trying a new 3D-ASL WIP that we got from our MRI vendor, and after preforming the analysis using BASIL and oxford_asl (using the GUI), the perfusion_calib image absolute values turned out very high (~2000-4000 for GM instead of ~30-60).
What may be the reason for that?
The sequence parameters are:
multi-PLD pcASL
16 PLD's (0.8,1.0,1.2,1.4,..,3.8), 1 repeat for every PLD (32 volumes overall, 16 labels and 16 controls)
bolus duration = 1.8
voxel size = 1.7 x 1.7 x 4
calibration PD image with 5.0s TR
3D GRASE
with background suppression
Thanks for your help!
Tamir
########################################################################
To unsubscribe from the FSL list, click the following link:
https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1
|