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<p class="MsoNormal">Hello, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have what is possibly a naïve question, but I can’t seem to find anything on the tutorial pages.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m trying to create a headmodel using the localspheres method, using the output of a segmented MRI.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There is a tutorial page for using different types of headmodels, but it references ft_prepare_localspheres – which works, but it appears to have been deprecated. When I try this:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">hdr=ft_read_header(‘mydata.ds’);<o:p></o:p></p>
<p class="MsoNormal">cfg=[];<o:p></o:p></p>
<p class="MsoNormal">cfg.method=’localspheres’;<o:p></o:p></p>
<p class="MsoNormal">cfg.grad=hdr.grad;<o:p></o:p></p>
<p class="MsoNormal">cfg.vol=segmented_mri;<o:p></o:p></p>
<p class="MsoNormal">vol=ft_prepare_headmodel(cfg, segmentedmri);<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I get an error at ft_getopt(cfg,’tissue’);<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Although the documentation for ft_prepare_headmodel states that the only additional field needed by localspheres is “cfg.grad” it seems that cfg.tissue may also be required? If so, how do I set this – I can’t find any documentation that
explains.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I should note that I’ve run ft_prepare_headmodel successfully using a singleshell method.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Allison<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Allison Nugent, PhD<o:p></o:p></p>
<p class="MsoNormal">MRI Physicist<o:p></o:p></p>
<p class="MsoNormal">Experimental Therapeutics and Pathophysiology Branch<o:p></o:p></p>
<p class="MsoNormal">NIMH/NIH/DHHS<o:p></o:p></p>
<p class="MsoNormal">Ph. 301-451-8863<o:p></o:p></p>
<p class="MsoNormal">nugenta@mail.nih.gov<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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