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Hi Douglas,
I've investigated the use of SAMSEG for AD/MCI patients. I'm using the
7.2 version of Freesurfer and I've realized that I get different results
using the same data but when I run the SAMSEG multiple times (on the
same patient).
Differently from using ASEG, SAMSEG provides also the chance to execute
the code using multiple threads.
In the first run I've executed SAMSEG on ADNI patient id 002_S_0685
using the MP-RAGE series having ID I18211 (the link below provides the
NIFTI version of the series which has been used for the processing).
This patients is part of ADNI dataset.
https://secure-web.cisco.com/1fi2W1V4_-rYaCj4VoBlufgE4KDcCDmct4ekP97q5p4NhEV8GTeeMTUUAEhXL8MHNWtVbBoyd2-9Wb7uoqiyWHs1A00hpFn4_hXix06Wic82VWju3KJRxrCvVNxgrY04ituYHERUX7lg1eMaxcyxPAuAog3Vocj6FwM34M2dg56JzEFeYRM-UDN8XjqmULiSKhUpSLPx2RgQ2QsjYYnq1ZwzwI_Z3RxuJAC5LaAEIoTA-YEmW0r0E3zapUsXCeyz-u8zlXOZDDMF53MJt0G07k90wH4CH3GPEs7NzrE2uZ0FtZ_sjrAELB37rB2Z2X7ErpBj9TsIHBarvypTq_Rc7BQ/https%3A%2F%2Fdrive.google.com%2Fdrive%2Ffolders%2F15oghna17Qz-OSuo9E3-rldOt935AEEuO%3Fusp%3Dsharing
<https://secure-web.cisco.com/1fi2W1V4_-rYaCj4VoBlufgE4KDcCDmct4ekP97q5p4NhEV8GTeeMTUUAEhXL8MHNWtVbBoyd2-9Wb7uoqiyWHs1A00hpFn4_hXix06Wic82VWju3KJRxrCvVNxgrY04ituYHERUX7lg1eMaxcyxPAuAog3Vocj6FwM34M2dg56JzEFeYRM-UDN8XjqmULiSKhUpSLPx2RgQ2QsjYYnq1ZwzwI_Z3RxuJAC5LaAEIoTA-YEmW0r0E3zapUsXCeyz-u8zlXOZDDMF53MJt0G07k90wH4CH3GPEs7NzrE2uZ0FtZ_sjrAELB37rB2Z2X7ErpBj9TsIHBarvypTq_Rc7BQ/https%3A%2F%2Fdrive.google.com%2Fdrive%2Ffolders%2F15oghna17Qz-OSuo9E3-rldOt935AEEuO%3Fusp%3Dsharing>
The first execution of SAMSEG was with default settings (1 thread) and
results are attached, the second was using --threads 6.
These results from the SAME series are similar but they are NOT the same.
How can we explain that?
Regards
# Measure Unknown, 938678.804563, mm^3
# Measure Skull, 70514.097706, mm^3
# Measure Soft_Nonbrain_Tissue, 1117216.914116, mm^3
# Measure Brain-Stem, 19382.400237, mm^3
# Measure CSF, 510336.929212, mm^3
# Measure Left-Cerebellum-Cortex, 46227.404805, mm^3
# Measure Right-Cerebellum-Cortex, 46954.827348, mm^3
# Measure 4th-Ventricle, 1927.249860, mm^3
# Measure Fluid_Inside_Eyes, 10681.567722, mm^3
# Measure Left-Cerebral-Cortex, 194854.703127, mm^3
# Measure Right-Cerebral-Cortex, 198395.911108, mm^3
# Measure Left-Cerebellum-White-Matter, 13367.296942, mm^3
# Measure Right-Cerebellum-White-Matter, 13442.628195, mm^3
# Measure Right-Cerebral-White-Matter, 200768.332902, mm^3
# Measure Left-Cerebral-White-Matter, 199392.351036, mm^3
# Measure Right-choroid-plexus, 2202.554448, mm^3
# Measure Right-Amygdala, 1483.776188, mm^3
# Measure Left-Amygdala, 1543.083787, mm^3
# Measure Right-Hippocampus, 3889.943347, mm^3
# Measure Right-Inf-Lat-Vent, 773.181432, mm^3
# Measure Left-Hippocampus, 3957.909089, mm^3
# Measure Left-choroid-plexus, 1732.272325, mm^3
# Measure Left-Inf-Lat-Vent, 374.679073, mm^3
# Measure Optic-Chiasm, 194.020527, mm^3
# Measure Right-VentralDC, 3517.897243, mm^3
# Measure Left-VentralDC, 3616.708619, mm^3
# Measure 3rd-Ventricle, 2767.856042, mm^3
# Measure Left-Accumbens-area, 582.221221, mm^3
# Measure Left-Putamen, 4786.334982, mm^3
# Measure Right-Putamen, 4722.605242, mm^3
# Measure Right-vessel, 80.863621, mm^3
# Measure Right-Accumbens-area, 461.768868, mm^3
# Measure WM-hypointensities, 20335.889722, mm^3
# Measure Left-Lateral-Ventricle, 20190.963456, mm^3
# Measure Left-vessel, 61.352892, mm^3
# Measure Right-Lateral-Ventricle, 18727.913621, mm^3
# Measure Right-Pallidum, 1703.159618, mm^3
# Measure Left-Caudate, 3777.300280, mm^3
# Measure Right-Thalamus, 5636.150208, mm^3
# Measure Left-Pallidum, 1656.295530, mm^3
# Measure Right-Caudate, 3583.231471, mm^3
# Measure Left-Thalamus, 6017.696659, mm^3
# Measure non-WM-hypointensities, 89.673417, mm^3
# Measure 5th-Ventricle, 15.867564, mm^3
# Measure Unknown, 939056.015091, mm^3
# Measure Skull, 71767.719764, mm^3
# Measure Soft_Nonbrain_Tissue, 1112717.212711, mm^3
# Measure Brain-Stem, 19396.749933, mm^3
# Measure CSF, 511873.576213, mm^3
# Measure Left-Cerebellum-Cortex, 46226.557363, mm^3
# Measure Right-Cerebellum-Cortex, 46977.164462, mm^3
# Measure 4th-Ventricle, 1932.334854, mm^3
# Measure Fluid_Inside_Eyes, 10678.846479, mm^3
# Measure Left-Cerebral-Cortex, 195097.957627, mm^3
# Measure Right-Cerebral-Cortex, 198722.232809, mm^3
# Measure Left-Cerebellum-White-Matter, 13367.963053, mm^3
# Measure Right-Cerebellum-White-Matter, 13448.109331, mm^3
# Measure Right-Cerebral-White-Matter, 201145.753968, mm^3
# Measure Left-Cerebral-White-Matter, 199725.946038, mm^3
# Measure Right-choroid-plexus, 2196.836003, mm^3
# Measure Right-Amygdala, 1483.180736, mm^3
# Measure Left-Amygdala, 1541.752663, mm^3
# Measure Right-Hippocampus, 3885.522213, mm^3
# Measure Right-Inf-Lat-Vent, 774.735928, mm^3
# Measure Left-Hippocampus, 3954.921244, mm^3
# Measure Left-choroid-plexus, 1727.665580, mm^3
# Measure Left-Inf-Lat-Vent, 375.969644, mm^3
# Measure Optic-Chiasm, 194.100725, mm^3
# Measure Right-VentralDC, 3514.663768, mm^3
# Measure Left-VentralDC, 3624.351918, mm^3
# Measure 3rd-Ventricle, 2772.144481, mm^3
# Measure Left-Accumbens-area, 583.409147, mm^3
# Measure Left-Putamen, 4795.974528, mm^3
# Measure Right-Putamen, 4727.161970, mm^3
# Measure Right-vessel, 81.049494, mm^3
# Measure Right-Accumbens-area, 460.463919, mm^3
# Measure WM-hypointensities, 20286.439923, mm^3
# Measure Left-Lateral-Ventricle, 20198.148413, mm^3
# Measure Left-vessel, 61.483040, mm^3
# Measure Right-Lateral-Ventricle, 18752.376148, mm^3
# Measure Right-Pallidum, 1706.206364, mm^3
# Measure Left-Caudate, 3781.345908, mm^3
# Measure Right-Thalamus, 5643.708765, mm^3
# Measure Left-Pallidum, 1657.771589, mm^3
# Measure Right-Caudate, 3579.185246, mm^3
# Measure Left-Thalamus, 6021.094626, mm^3
# Measure non-WM-hypointensities, 90.822737, mm^3
# Measure 5th-Ventricle, 16.024828, mm^3
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