Dear All, I have 2 coregistered MR volume (pre and postresective MRI) sets for several epilepsy patients. I need to extract the resection volume (VOI= pre - postresection volume) as a set of voxel coordinates. Can I do this in freesurfer? Ideally I would avoid manual delineation slice by slice as in MRImicro and if possible I would do it automatically by thresholding, for example. If not, manual is fine if it can be done in FS. Please advise. Thank you, Octavian.
Hi Octavian
it's hard to say. I would think you could get a bunch of it automatically by looking for places that are significantly different between the two timpoints, but that will depend on how well they register. You can certainly do it manually in freeview.
cheers Bruce On Sun, 2 Dec 2012, octavian lie wrote:
Dear All, I have 2 coregistered MR volume (pre and postresective MRI) sets for several epilepsy patients. I need to extract the resection volume (VOI= pre - postresection volume) as a set of voxel coordinates. Can I do this in freesurfer? Ideally I would avoid manual delineation slice by slice as in MRImicro and if possible I would do it automatically by thresholding, for example. If not, manual is fine if it can be done in FS. Please advise. Thank you, Octavian.
Dear Bruce,
If I use freeview slice by slice to mark the resection boundaries and I mark a set of vertices on each slide, how should I save those? Do I have to create a set of labels, each on one slide, and then combine them, or how? I thank you for your thoughts, Octavian.
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Hi Octavian What are you trying to achieve? Bruce
On Dec 9, 2012, at 12:09 AM, octavian lie octavian.lie@gmail.com wrote:
Dear Bruce,
If I use freeview slice by slice to mark the resection boundaries and I mark a set of vertices on each slide, how should I save those? Do I have to create a set of labels, each on one slide, and then combine them, or how? I thank you for your thoughts, Octavian.
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.
freesurfer@nmr.mgh.harvard.edu
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Bruce Fischl -
octavian lie