Re: [Freesurfer] bbregister for fmri FEAT data
Hi again, the registration looks fine in tkregister2, but is apparently wrong in fslview (and also mricron). See the attached files (as link from http://vedlegg.uib.no/?id=399ad2cce1a3138f8eb4f6a06f4acfc4) showing screenshots of fslview and tkregister2. How can this be explained, and how can we visualize the correct orientation in fslview? What does this misalignment influence any further processing with fnirt and concatenation of the affine transformation fields? This is our command we run for bbregister: bbregister --s subj_505 --mov vol0001.nii.gz --reg register-test.dat --init-fsl --t2 --o test.nii.gz where vol0001 is the first volume in the fmri sequence and is flipped to align with LAS (as the highres). Thank you for your kind help, Erlend Hodneland ean that it is in the wrong orientation? It should be in the same orientation as the anatomical. How does the reg look in tkregister2? Note that fslview can display volumes in odd orientations even when the orientation is correct. doug On 04/13/2012 03:31 AM, Erlend Hodneland wrote: Hi, we are trying to register fmri FEAT data (example_func.nii) to the anatomical scan (processed in Freesurfer) using bbregister to opt. the affine registration before running FNIRT. However, the orientation of the registered image is flipped around and is incorrect after applying bbregister. We have tried: 1) bbregister --s subj_501 --mov example_func.nii.gz --reg register.dat --init-header --bold --o example_func2highres-fs.nii 2) bbregister --s subj_501 --mov example_func.nii.gz --reg register.dat --init-fsl --bold --o example_func2highres-fs.nii 3) bbregister --s subj_501 --o example_func2highres-fs.nii --feat myfeatdirectory 4) tkregister2 --mov example_func.nii --regheader --reg tkreg.dat (this one looks correct) followed by bbregister --s subj_501 --mov example_func.nii.gz --reg register.dat --init-reg tkreg.dat --bold --o example_func2highres-fs.nii 5) reorienting to match the highres: fslorient -swaporient example_func fslswapdim example_func x -y z example_func_swap (correct orientation) followed by bbregister --s subj_501 --mov example_func_swap.nii.gz --reg register.dat --init-fsl --bold --o example_func_swap2highres-fs.nii with the output being flipped in wrong orientation for all options. We would greatly appreciate if you have any suggestions for how to overcome this problem! Cheers/Sincerly/All best Erlend Hodneland ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer 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.
Re: [Freesurfer] mris_expand not working since upgrading to v.5.1.0
Hi Andrew, I just tried this and it worked fine for me. If you tell me what os/hardware you are running on I'll send you a current binary and you can see if that works. cheers Bruce p.s. do you look at the surfaces via: freeview -f lh.white lh.white.expanded On Fri, 20 Apr 2012, Andrew C Yourich wrote: Hello, I have recently upgraded from running version 4.0.2 of Freesurfer to the most current version (v.5.1.0), and have encountered a problem. I used to be able to expand the recon-all generated white matter volume by a percentage of the grey matter thickness using mris_expand, but ever since changing to the most current version, the mris_expand command is not returning correct results. The command I use is: mris_expand -thickness ./lh.white $1 lh.white.expanded where $1 is a variable indicating the percentage I wish to expand by. Since the version change, mris_expand does not seem to actually change the volume of lh.white, with the output file lh.white.expanded looking identical to lh.white after running the command. This occurs regardless of the value I enter for $1 (be it very large, very small, or even negative) The command appears to run normally as it did in v.4.0.2 and does not give any error message, but the output volume appears unchanged from the input volume. Have the parameters or flags for this command changed between the versions, or has mris_expand been deprecated? If so, what flags or command should I use instead? Thanks, - Andrew ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer 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] Definition of Surface Area Metric
Dear Freesurfer Experts, Would you mind clarifying what the measure of surface area anatomically means? Is it the area of the pial surface? Thanks in advance, Dhinakaran. ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer 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.
Re: [Freesurfer] Definition of Surface Area Metric
Hi Dhinakaran it can be the area of any surface. We generate both the white and pial surfaces by default (I think the white is named [lr]h.area while the pial is [lr]h.area.pial cheers Bruce On Mon, 23 Apr 2012, Dhinakaran Chinappen wrote: Dear Freesurfer Experts, Would you mind clarifying what the measure of surface area anatomically means? Is it the area of the pial surface? Thanks in advance, Dhinakaran. ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer 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.
Re: [Freesurfer] improving automated cerebellar parcellation
Hi Bruce, Can you point me somewhere in the right direction? Is there some example I could start with? I don't use Matlab, although it seems similar to R so I should be okay with learning the syntax, but I just need a place to start. Anthony On 4/20/12 4:02 PM, Bruce Fischl wrote: probably in matlab On Fri, 20 Apr 2012, Anthony Dick wrote: Thanks Bruce. What's the easiest way to paste those labels. Manually through tkmedit, or through the command line? Anthony On 4/20/12 3:53 PM, Bruce Fischl wrote: HI Anthony I would make sure to include an entire brain labeling in the training set. You can do this by pasting your manual labels into our aseg of the subjects in question. cheers Bruce On Fri, 20 Apr 2012, Anthony Dick wrote: Hello, I developed a new atlas for parcellating the cerebellum, based on 20 brains manually segmented by Jörn Diedrichsen, which he was kind enough to share (note these also formed the basis for his 2009 paper in Neuroimage (46; 39-46). I got the segmentation to work, but I would not say it works well. As you can see from the attached image, it is not ready for prime-time. On the left is the brain of subject 1, manually segmented. On the right is the brain of the same subject with the automated sementation, based on the developed atlas. My question is, how can I improve it? I realize this is an open question and potentially difficult to answer without some probing, but this is a resource I think a lot of users would like to have access to, so perhaps it is worth the effort. Anthony 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. -- Anthony Steven Dick, Ph.D. Assistant Professor Department of Psychology Florida International University Modesto A. Maidique Campus DM 296B 11200 S.W. 8th Street Miami, FL 33199 Phone: 305-348-4202 Fax: 305-348-3879 Email: ad...@fiu.edu Webpage: http://www.fiu.edu/~adick ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
