External Email - Use Caution Dear Help Desk - I have a few basic questions about freesurfer. I am retired military bomb technician working on a blast TBI initiative and not a research so please bear with me. We are looking at a long term study of bomb technicians and I am curious about the following before moving forward.
1. Total number of images processed by freesurver? Is this in the thousands or millions? 2. Cohart group data is this from each organization or is there a central pool. e.g. I had a 3D volumetric MRI done with DTI at Washington University in St Louis and am 49yrs old is this only from their pool or larger data base? Any idea number of images in that data base? 3. Standard Deviations, Patient Annual Volume Change and Group Annual Volume change; are these organizations specific or a larger data base. 4. How accurate are the volumes from a 3T MRI and is there a huge fluctuation if scans are done on the same exact MRI system? e.g. in my scan some of the thicknesses were down to .0013mm and volumes down to .9mm3 = is there a lot of error in those numbers. Thanks for any information you can provide! It seems there will be a DVBIC site open soon where our school is and I would like to be able to provide some input on this. Thanks, Todd Sheckley
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