Just click on a point and look at the vertex RAS. At zoom=1, you have to translate the surface over to the scale bar. At zoom=1 I got about 10mm, but it did seem to change when I zoomed in.

doug

On 11/22/2013 12:23 PM, Cesar Echavarria wrote:

Actually, Doug can you tell me how to get the xyz coordinates on Tksurfer so I can figure out the length of the bar as you did?

Thanks

Cesar

On Fri, Nov 22, 2013 at 12:19 PM, Cesar Echavarria <cechavarria60@gmail.com mailto:cechavarria60@gmail.com> wrote:

I meant zoom in on the brain. I guess I'll take Doug's approach
and estimate the scale of the bar with the xyz coordinates.

Cesar


On Fri, Nov 22, 2013 at 12:16 PM, Bruce Fischl
<fischl@nmr.mgh.harvard.edu <mailto:fischl@nmr.mgh.harvard.edu>>
wrote:

    Hi Cesar

    what do you mean by "scale the brain up"?

    Bruce

    On Fri, 22 Nov 2013, Cesar Echavarria wrote:

        Hi freesurfers,
        Anyone know what the scale bar in TkSurfer represents?
        >From past threads I
        gathered that it represent 1 cm on the human brain.
        However, the size of the
        bar displayed gets smaller as I scale the brain up which
        does not make sense
        if the bar is supposed to represent a constant length.

        Cesar




    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.




-- 
Cesar Echavarria
Research Assistant
Martinos Center for Biomedical Imaging, Harvard-MGH
Brain & Cognitive Sciences | MIT 2012

-- Cesar Echavarria Research Assistant Martinos Center for Biomedical Imaging, Harvard-MGH Brain & Cognitive Sciences | MIT 2012