Hi Juergen,

why are you getting large defects? The time goes as the square of the convex hull of the defect, so it is *slow* for large defects (and fast for small ones). Where are your defects?

Bruce

On Tue, 15 May 2007, Juergen Haenggi wrote:

Dear Freesurfer users

Is there any rule of thumb with respect to the size of topological defects? Sometimes large defects (involving more than 10000 or 20000 vertices) occur and the topological correction for these defects runs more than 48 hours and sometimes failed to correct them. How long should I wait? Up to which number of vertices involved in a defect I should accept it or manually edit it?

Thanks a lot for help Best regards Juergen

---

Juergen Haenggi Ph.D. (Dr. des.) Division of Neuropsychology Institute of Psychology University of Zurich Binzmuehlestrasse 14, PO Box 25 8050 Zurich, Switzerland 0041 44 635 73 97 (phone office) 0041 76 445 86 84 (phone mobile) 0041 44 635 74 09 (fax office) BIN 4.D.04 (office room number) j.haenggi@psychologie.uzh.ch (email) http://www.psychologie.uzh.ch/neuropsy/ (website) http://www.juergenhaenggi.ch (private website)

---

---

Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer