maybe the fimbria/alveus is different on the left than the right? Not
sure, but if the protocols are different it's very difficult to make any
meaningful comparison
Bruce
On Tue, 2 Oct 2012, Ana Arruda wrote:
That fact can explain the differences between manual and automatic
segmentations. But how can I explain the differences just for the
left-hippocampus values in Freesurfer? Comparing percent volume difference
between Freesurfer-Manual and FSL-Manual, the percent is bigger in
left-hippocampus for Freesurfer-Manual. And according to the literature
(Morey et al.) the percent volume difference for Freesurfer-Manual is always
smaller than FSL-Manual as you can see in Fig. 5 of that article.
FSL
Manual
Freesurfer
HD
HE
HD
HE
HD
HE
3810.741698
3382.601803
3355.5
3007.5
3705
3721
3409.829467
2860.187224
2868
2653.5
3382
3331
3306.409891
3381.885156
3025.5
3001.5
3358
3575
3794.767147
2907.559116
2880
2769
3651
3474
4521.450897
4587.515346
3642
3468
4049
4113
3794.638317
3841.111348
3042
3066
4061
4242
4772.512671
4028.949924
3570
3496.5
4812
4801
4025.037115
3833.11259
3772.5
3513
4094
4224
?
?
3196.5
2704.5
?
?
2900.838938
2705.713765
2526
2466
3184
2820
3607.996048
3061.21013
2749.5
2589
3852
3591
3694.401205
3343.946802
2682
2559
3530
3507
4562.195757
4484.215251
3156
3286.5
4114
4599
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