Hi everyone,
I have been working for years with Siemens' Neuro3D for tractography at
the clinic and only recently kicked off with FSL in order to process
data from other scanners. So I stumbled upon this problem, and I'd
appreciate any help, if anyone has come across it as well.
I get a kill during the estimation process by BEDPOSTX (with default
settings). At some point during the post-processing stage, the process
halts, and pops up the error message: "Errors: child killed: kill
signal" and prompts to the log file, where the error is:
Image Exception : #3 :: Mask of different size used in matrix()
An exception has been thrown
Mask of different size used in matrix()
Could it be the fact that the diffusion acquisition is not whole brain
and crops a bit of cortex on the top, thereby making the structural mask
(derived from a T1 whole-brain scan) incompatible?
Could it be that the diffusion images are weighted (2)? Or could it be
the effect of other acquisition parameters that FSL regards are pre-set?
The acquisition settings for the DTI are below:
TR:8000, TE: 94, 50 slices, 2x2x2, A->P phase encoding, dist fact 0%, 6
averages 1 concatenation in a single series, iPat GRAPPA acc.f: 2, axial
orientation, MDDW diffusion mode, Diff weighting 2, b1:0, b2:1000.
Any idea or help would be most appreciated.
Vasileios Kokkinos
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