Print

Print


Hi Yingtian,
the path distribution correction option should create extra output files
with the suffix  _lengths
so you get results with and without correction

Moises

On Tue, 30 Oct 2018 at 10:46, Yingtian Hu <[log in to unmask]> wrote:

> Dear FSL experts,
>
> I have some questions about the path distribution correction option in
> probtrackx2. I checked the help manual and found that --pd option is used
> to do the path distribution correction.  After running the script with
> --pd, I found that new-created fdt_network_matrix and waytotal had no
> difference with the results produced by the scripts without --pd option.
> Since my goal was the distribution corrected probabilistic tractography,
> the results were still the same after adding --pd option because my
> calculation of probabilistic tractography only depends on
> fdt_network_matrix and waytotal. In addition, I noticed that there was a
> change of the fdt_paths.nii.gz file, which means there was a difference
> between results produced by two scripts.
>
> Would it be possible to explain why I got those results and how path
> distribution correction actually works? I also attached the script I used
> at the end of the message.
>
> Thank you very much.
>
> Sincerely,
> Yingtian
>
>
> /usr/local/fsl/bin/probtrackx2  \
> --network -x ${save_path}/targets_Power.txt \
>  -l -c 0.2 -S 2000  \
>  --steplength=0.5 -P 5000 \
>  --pd \
>  --xfm=${pathproc}/${subject}/data_${method}.bedpostX/xfms/standard2diff.mat
> \
>  --forcedir --opd -s ${bpx_path}/merged \
>  -m ${bpx_path}/nodif_brain_mask \
>  --dir=${save_path} \
>  --avoid=/cbis/projects/brain/R01DPS/analysis/templates/CSF.nii \
>  --omatrix1
>
> ########################################################################
>
> To unsubscribe from the FSL list, click the following link:
> https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1
>

########################################################################

To unsubscribe from the FSL list, click the following link:
https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1