Ideally, the warping would be done in a more symmetric way (possibly by
doing two half-way warps so that both are matched to their mean).
There was no major reason for choosing to warp the late to the early
image, rather than the other way around.
Best regards,
-John
-----Original Message-----
From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]]
On Behalf Of Matthew L. Senjem
Sent: Tuesday, September 12, 2006 11:11 PM
To: [log in to unmask]
Subject: Re: [SPM] longitudinal VBM/TBM
Hello John and list,
I have another quick question regarding the
methods in the following paper:
C M Kipps, A J Duggins, N Mahant, L Gomes, J Ashburner, and E A McCusker
Progression of structural neuropathology in preclinical Huntington's
disease: a tensor based morphometry study
My question is, why did you choose to warp the "early" image to the
"late" image, instead of vice-versa?
The reason I ask this is because in a post to this list (which predates
the article in question) you recommended warping the "late" image to the
"early" one.
Sorry for asking so many questions, and thanks for your time and
patience.
Best wishes,
Matt.
--
Matthew L. Senjem
Analyst Programmer - Imaging Systems
Mayo Clinic and Foundation
Mail Code: RO_CE_09_IMAGING
200 First St. SW
Rochester, MN 55901
[log in to unmask]
Fax: 507-284-9778
Phone: 507-538-0764
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