Hi Yolanda,
if you want to simulate a study where one obtains 2 time points (6 months
apart) or 2 time points (12 months apart) and then compare the results, you
would need to run these two independently through free surfers longitudinal
stream (one time including 0 and 6 month, the other time
Hi Martin,
Thank you for your answer, but my idea was to compare the atrophy
rates when using scans at 6 months (0 - 6 months) and scans at 12
months (0 - 12 months). If my templates are built with more time
points, the results will be biased, right?
Regards,
Yolanda
2013/3/18 Martin Reuter :
>
Hi Yolanda,
actually it is advantageous if the template is build from more time
points. You don't need to process the images again, just do your
statistical analysis with the time points you are interested in.
But: why restrict the statistics to a subset of the data? If you are
interested in y
Dear FreeSurfer experts,
I have run a longitudinal study considering multiple time points (7
scans/subject on average) with FS 5.1. However, I am interested in the
percent changes between two time points only (between 0 and 6 months
and between 0 and 1 year). Should I run the longitudinal stream f
