Yes, I meant that the output labels were much less than the input ones and I would not expect this, but their position was correct. I will try to figure out if I did something wrong. Thank you!
Eleonora 2013/4/4 Douglas Greve <gr...@nmr.mgh.harvard.edu> > > When you say it does not work, what do you mean? Did it not put the label > in the right place? The number of vertices in the output label may be much > less than in the input. label2label just finds the vertex that is closest > to each label point. A multiple input label points may map to a single > output label. > doug > > > > On 4/3/13 4:24 PM, Eleonora Maggioni wrote: > > Dear Doug, > thank you for the suggestion. > I used the new file that you sent me exactly as in the example 4, but the > labels which are effectively translated into the nearest vertex surface > labels are few. > I first selected the marker labels on the T1 image within tkmedit. As the > labels are outside the head volume, I put the maximum distance --paint as > 50 mm, to be sure that the distance is sufficient to find a surface vertex. > But anyway is still does not works. > Can this be due to the external position of the markers? Which kind of > projection is done by mri_label2label? > Thank you for your support! > > Eleonora > > 2013/4/2 Douglas N Greve <gr...@nmr.mgh.harvard.edu> > >> >> Hi Eleonora, >> >> the easiest way to do this is to create a label of the electrodes, then >> use mri_label2label to map them to the nearest pial vertices. This >> ability to map volume labels to nearest surface vertices is broken in >> the current version. I've fixed this and put a new version here: >> >> >> ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/mri_label2label >> >> Run it with --help and use Example 4. >> doug >> >> >> >> On 04/02/2013 08:19 AM, Eleonora Maggioni wrote: >> > Hi Freesurfer experts, >> > I am new to FreeSurfer and I have a question. >> > I have markers of EEG electrodes on the T1 image of a subject and I >> > want to project them from the scalp to his pial surface (that I >> > reconstructed using the standard procedure). >> > To do so, I manually selected the central point of each marker in >> > tkmedit and I defined a control point. Then I red that control point >> > with tksurfer on the corresponding pial surface. This should be the >> > projection to the pial surface: is this procedure correct? If yes, in >> > which coordinate system is the projection made? >> > Thank you in advance, >> > Kind regards, >> > >> > -- >> > Eleonora Maggioni >> > >> > BioEngineering PhD student >> > Politecnico di Milano >> > Istituto E.Medea, Bosisio Parini (LC) >> > >> > >> > >> > _______________________________________________ >> > Freesurfer mailing list >> > Freesurfer@nmr.mgh.harvard.edu >> > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >> >> -- >> Douglas N. Greve, Ph.D. >> MGH-NMR Center >> gr...@nmr.mgh.harvard.edu >> Phone Number: 617-724-2358 >> Fax: 617-726-7422 >> >> Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting >> FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html >> Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ >> >> _______________________________________________ >> 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. >> >> > > > -- > Eleonora Maggioni > > BioEngineering PhD student > Politecnico di Milano > Istituto E.Medea, Bosisio Parini (LC) > > > -- Eleonora Maggioni BioEngineering PhD student Politecnico di Milano Istituto E.Medea, Bosisio Parini (LC)
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