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Hello, thanks for your reply. This is the script that I've run: oxford_asl -i /home/max/Scrivania/sb1/FUNC/PASL.nii -o /home/max/Scrivania/pippo/ -s /home/max/Scrivania/sb1/STRUC/T1_brain.nii.gz -c /home/max/Scrivania/sb1/FUNC/M0.nii --tr=3 --tis=1.8 But I still get the same error: OXFORD_ASL - running Saving results in natve (ASL aquisition) space to /home/max/Scrivania/pippo//native_space Saving results in structural space to /home/max/Scrivania/pippo//struct_space Pre-processing Creating mask Performing registration ASL_REG Input file is: /tmp/fsl_3gh19b_ox_asl/meanasl Running FLIRT Tidying up ASL_REG - Done. Calculating M0a - calling ASL_CALIB ASL_CALIB Tissue reference is: csf M0:1410.13000000000000000000 ASL_calib - DONE. /usr/local/fsl/bin/oxford_asl: 1176: /usr/local/fsl/bin/oxford_asl: alltis[0]=1.8: not found Number of inversion times: 1 Number of timepoints in data: 88 Number of repeats in data: 88 Any tips? Davide Davide Momi ----------- PhD Candidate Unit of Behavioral Economics and Neuroeconomics Department of Neuroscience, Imaging and Clinical Sciences University "G. d'Annunzio" of Chieti Via dei Vestini 31, 66013 Chieti, Italy Mobile ++39 - 348-2650293 2018-01-12 16:49 GMT+01:00 Michael Chappell <[log in to unmask]>: > From your scan parameters you only have one TI (at least as far as > oxford_asl understands the term). You are clearly using pASL and your TI is > 1.8 (your TI2) seconds and your bolus duration is 0.7 seconds (your TI1). > > Michael > > > On 12 Jan 2018, at 13:28, Davide Momi <[log in to unmask]> wrote: > > Dear FSL experts, > > From previous exchanges it wasn't clear to me what is the solution to this > problem. The Oxford_ASL script produces an error: > SCRIPT LINE: oxford_asl -i data_pasl/diffdata --tis 0.7, 1.8 -o ex1_1 > --bolus 1.1 --bat 0.7 --t1 1.3 --t1b 1.66 --artoff --spatial > > /usr/local/fsl/bin/oxford_asl: 1176: /usr/local/fsl/bin/oxford_asl: alltis > [0]= 0: not found > /usr/local/fsl/bin/oxford_asl: 1176: /usr/local/fsl/bin/oxford_asl: alltis > [0]= 7: not found > > Number of inversion time: 2 > Number of timepoints in data: 88 > Number of repeats in data: 44 > > I was wondering what shall I put as TIs. I mean my machine parameters are: > > - Inversion Time 1: 0.7 > - Saturation Stop Time: 1,6 > - Inversion Time 2: 1,8 > > Could you please help me with that? > > Thanks > > > --- > Michael Chappell MEng DPhil > W: http://www.ibme.ox.ac.uk/qubic > T: +44 1865 617657 <+44%201865%20617657> > Associate Professor, Institute of Biomedical Engineering, University of > Oxford. > http://www.ibme.ox.ac.uk > Director of Training, EPSRC-MRC CDT in Biomedical Imaging > http://www.onbicdt.ox.ac.uk > Governing Body Fellow, Wolfson College, Oxford. > http://www.wolfson.ox.ac.uk > > PhysiologyforEngineers.org > NeuroimagingPrimers.org > > > > > > > >