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the one difference is that the distortions are different for spiral compared to EPI, so the normalization may be off in regions with susceptibility problems. It would be interesting to hear what the folks at Stanford are doing now since spiral is their bread and butter - when I was there we played around with creating a spiral template but I'm not sure that it ever went into general use. cheers russ Robert Welsh wrote: > We do it all that time and don't see any issues. The T2* aspect of epi or spiral are in essence the same which is where the importance of the template come into play. The epi or spiral is just the readout scheme. > > Robert Welsh > > -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ > Robert C. Welsh, PhD > Research Investigator > Department of Radiology > University of Michigan > (734) - 764 - 2412 (fax) > [log in to unmask] > > >>> jonathan david norton <[log in to unmask]> 08/02/01 12:07PM >>> > Dear colleagues, > > What, if any, problems would arise if spiral T2* images were > normalized to the EPI template included in SPM? > > Jon Norton -- Russell A. Poldrack, Ph. D. Assistant Professor of Radiology, Harvard Medical School MGH-NMR Center Building 149, 13th St. Charlestown, MA 02129 Phone: 617-726-4060 FAX: 617-726-7422 Email: [log in to unmask] Web Page: http://www.nmr.mgh.harvard.edu/~poldrack