Hi, Andreas;
In a time series of 200 ASL pairs, injection of amphetamine was done halfway. Having tried to put the time series into MELODIC as a whole, this too gave crashes. Variance analysis of the data shows what I think are signs of significantly increased blood pressure and cardiac inotropy after receiving the amphetamine, seen as increased pulsatility of vessels and surrounding tissues, and I thought it a good idea to split the time series from this reason for initial assessments. Here the problem arose; the first half crashes, whereas the second goes fine...
Splitting was done by simply dividing the functionals before .gz-packing it.
Regards;
Inge
> Date: Wed, 18 Jun 2014 15:13:52 +0200
> From: [log in to unmask]
> Subject: Re: [FSL] MELODIC crash
> To: [log in to unmask]
>
> Hi,
> being a mere MD as well I wonder why have you süplit the time series in
> the first place?
> And how have you done the splitting?
> Cheers,
> Andreas
>
> Am 18.06.14 14:24 schrieb "Inge R. Groote" unter <[log in to unmask]>:
>
> >Hi, folks;
> >
> >Trying to run ICA on ASL time series, I have split a drug injection
> >experiment in two sets of 100 volumes: Rest and under influence of drugs.
> >Each file is generated identically, and the FSL is freshly re-installed.
> >Running the file of the last 100 volumes goes fine, whereas in the first
> >file, MELODIC gives the horrendous message that a "child has been killed":
> >
> >Prestats:
> >
> >/usr/local/fsl/bin/fslstats prefiltered_func_data -p 2 -p 98
> >-47.834656 139.756546
> >
> >/usr/local/fsl/bin/fslmaths prefiltered_func_data -thr -38.4550959 -Tmin
> >-bin mask -odt char
> >
> >/usr/local/fsl/bin/fslstats prefiltered_func_data -k mask -p 50
> >102.943703
> >
> >/usr/local/fsl/bin/fslmaths mask -dilF mask
> >
> >/usr/local/fsl/bin/fslmaths prefiltered_func_data -mas mask
> >prefiltered_func_data_thresh
> >
> >/usr/local/fsl/bin/fslmaths prefiltered_func_data_thresh -Tmean mean_func
> >
> >/usr/local/fsl/bin/susan prefiltered_func_data_thresh 113.08376925
> >2.12314225053 3 1 1 mean_func 113.08376925 prefiltered_func_data_smooth
> >child killed: segmentation violation
> >
> >FATAL ERROR ENCOUNTERED
> >child killed: segmentation violation
> > while executing
> >"if { [ catch {
> >
> >
> >
> >for { set argindex 1 } { $argindex < $argc } { incr argindex 1 } {
> > switch -- [ lindex $argv $argindex ] {
> >
> > -I {
> > incr argin..."
> > (file "/usr/local/fsl/bin/feat" line 119)
> >
> >Being a mere MD, I admit that the above reads like a dialect of
> >north-Cantonese; are anyone willing to give a tip on how to get the black
> >box back in shape and stop the child killing?
> >
> >Kind regards;
> >
> >Inge
