On Fri, 2013-06-07 at 12:42 -0700, Joshua Lee wrote:
> Thanks Bruce and Eugenio,
>
> Suppose I had two identical images of a subject, but in one image I
> reduced the contrast of internal lamina while leaving the rest of the
> image intact...just removing internal intensity differences, but
> leaving the outer boundary contrast intact.
>
> Would the images result in very different subfield segmentations?
>
> Josh
>
>
> -
>
> Joshua Lee
>
> Graduate Student
> Center for Mind and Brain &
>
> Department of Psychology
>
> University of California, Davis
>
530.747.3805
>
>
> On Fri, Jun 7, 2013 at 12:33 PM, Bruce Fischl
> <
fischl@nmr.mgh.harvard.edu> wrote:
> Hi Josh
>
> it depends on intensity differences if it can find them as
> well as boundary/geometry.
>
> cheers
> Bruce
>
>
>
> On Fri, 7 Jun 2013, Joshua Lee wrote:
>
> I'm trying to understand Leemput's subfield algorithm
> better as implemented
> in Freesurfer. Does the algorithm make use of
> intensity differences in the
> internal hippocampal lamina from the subject's T1
> image to warp meshes and
> assign subfield probabilities? Or does it depend only
> on outward boundaries
> of the hippocampus and probability priors to determine
> the inner boundaries
> between CAs and dentate gyrus?
> -
> Josh
>
>
>
>
>
> The information in this e-mail is intended only for the person
> to whom it is
> addressed. If you believe this e-mail was sent to you in error
> and the e-mail
> contains patient information, please contact the Partners
> Compliance HelpLine at
>
http://www.partners.org/complianceline . If the e-mail was
> sent to you in error
> but does not contain patient information, please contact the
> sender and properly
> dispose of the e-mail.
>
>