I also noted that our pipeline (ExploreASL) is fully reproducible (0 difference) within system but not between systems, I thought this could have something to do with pseudo-randomization of optimization algorithms, such as segmentation/registration? That these work differently between different OSses, or different hardware? The difference I got was very small however.
BW, Henk
Best wishes/hartelijke groet,
Henk(-Jan) Mutsaerts, MD PhD
VUmc Amsterdam/AMC Amsterdam/UMCU Utrecht UMCG Groningen/Sunnybrook Toronto/RIT NY