Hi,
If I understood correctly you have 30 subjects with 30 directions and 10
subjects with 6. I would exclude the latter, as any DTI estimates in those
will be much noisier.
Cheers,
Stam
----- Original Message -----
From: "Nelly" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, February 24, 2011 1:48 PM
Subject: [FSL] effect of number of diffusion gradient directions
Dear FSL team
I'm working with infants at 12 months of age. Currently I'm processing DTI
data but there is a problem:
We have different number of diffusion number directions: a group with 6
non-collinear directions and
another one with 30 non-collinear directions with the same parameter of
acquisition.
I would like to know if is it possible to use these data in the same study.
Something like:
Patients 15 (30 dir) and 5 (dir)
Controls 15 (30 dir and 5 (dir)
Many regards,
Nelly
Nelly Padilla. M.D. Phd
Clinical Research
Department of Maternal-Fetal Medicine, ICGON
Fetal and PerinatalMedicine Research Group, IDIBAPS
Hospital Clinic - Universitat de Barcelona
Sabino de Arana 1- Helios III
08028 Barcelona
Spain
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