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<div class="v1pre">Hi Oula,<br /><br /><span class="v1tlid-translation v1translation"><span>Thanks for your answers and suggestions.<br /><span class="tlid-translation translation"><span class="">1)If I understand correctly, the final headform in the B and B + ranges will be sufficient to calculate the optimal stimulation if I first check with Freesurfer for large deviations in bone and skin mapping ?</span></span></span></span><br /><br />2)<span class="tlid-translation translation"><span>Is it possible to use software to calculate appropriate electrode placement for transcranial temporal interference stimulation?</span><br /><span>Of course also to visualize the distribution of the electric field.</span><br /><span class="">For example, for fields with a frequency of 200 and 210 Hz.</span><br /><span class="">The area of interest is the L-amygdala.</span></span><br /><br />Best regards,<br />Witold<br />W dniu 2020-08-19 13:36, Oula Puonti napisał(a):
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0">Hi Witold, <br /><br />1) When using CAT the cortical and white matter surfaces are not<br />generated from the volume files (.nii.gz), but rather the surface<br />files stored in the mask_prerp folder. Thus editing the volume files <br /><br />will have no effect on the cortical or white matter surfaces in the<br />final headmodel. You can, however, edit the CSF, skull, and scalp<br />masks and these edits are propagated to the final head model. <br /><br />If you want to edit the GM and WM masks, please disable CAT12<br />(--no-cat flag). After that the edits on the WM and GM masks will also<br />change the final headmodel. <br /><br />2) We have not studied this systematically, but in my experience CAT12<br />does a good job even if the grade it assigns is B. That being said,<br />you should still inspect the resulting segmentation for large errors<br />using the <br /><br />headreco check call. <br /><br />3 & 4) I'm not that experienced with manual edits and the little<br />experience I have is limited to freeview. I've heard people<br />succesfully using ITK snap, but if you find it too difficult, I would<br />consider using freeview through the windows subsystem for linux. It's<br />a bit trickier, but the instructions here are quite clear: <br /><br /><a href="https://surfer.nmr.mgh.harvard.edu/fswiki/WindowsSupport" target="_blank" rel="noopener noreferrer">https://surfer.nmr.mgh.harvard.edu/fswiki/WindowsSupport</a><br /><br />Best,<br />Oula <br />-------------------------<br /><br />From: Simnibs-discuss <<a href="mailto:simnibs-discuss-bounces@drcmr.dk" rel="noreferrer">simnibs-discuss-bounces@drcmr.dk</a>> on behalf of<br /><a href="mailto:w.tomasz@sensusmed.pl" rel="noreferrer">w.tomasz@sensusmed.pl</a> <<a href="mailto:w.tomasz@sensusmed.pl" rel="noreferrer">w.tomasz@sensusmed.pl</a>><br />Sent: Tuesday, August 18, 2020 5:37:11 PM<br />To: Guilherme B Saturnino<br />Cc: <a href="mailto:discuss@simnibs.org" rel="noreferrer">discuss@simnibs.org</a><br />Subject: [Simnibs-discuss] manual correction <br /><br />Hello,<br /><br />I had the pleasure of talking to you for a while at the April webinar<br />on brain modeling after stroke.<br />I am currently researching the use of stimulation in a person with<br />tinnitus with personalized stimulation. <br />I have a question about the manual correction of the brain model (the<br />model created from the t1_mprage_sag and t2_space_dark_fluid_sag_p2<br />images) in the automatic model creation in the CAT report gets results<br />on the B and B + levels.<br />I'm a beginner when it comes to modeling (I am more concerned with<br />NIBS in clinical applications), sorry if my questions are trivial : <br /><br />1. on the SIMNIBS website, it says that it is not possible to do CAT<br />cuttings, whether in such a system we use "m2m_ernie \ mask_prep \<br />MASK_CAT_WM.nii.gz" or "m2m_ernie \ gm.nii.gz" for manual editing.<br />Does a manual correction make sense in such a situation? <br /><br />2. From your and your team's experience, how big are the differences<br />in electric field distributions between the B / B + and A-level<br />models?<br /><br />3.I wanted to use ITK-SNAP for the correction proposed on one of your<br />toutorials but I am a beginner I have a hard time figuring out how to<br />check if (how exactly) the surface contours follow the tissue shapes<br />in the T1w image, with more masks than one .<br /><br />4. Could you suggest a program other than FS to evaluate the created<br />model? Since I'm a Windows 10 and FS user, it's more complicated here.<br /><br />Thank you very much for your help and your time!<br />Best regards,<br />-- <br /><br /> Witold Tomasz<br /><br /> psycholog, psychoterapeuta, terapeuta tDCS<br /><br /> Ośrodek psychoterapii i neurorehabilitacji<br /><br /> Sensusmed Witold Tomasz<br /><br /> p:<br /> 504288040 m: 789335047<br /><br /> a:<br /> Kraków 30-303<br /><br /> ul.Madalińskiego 3/1<br /><br /> w:<br /> <a href="http://www.sensusmed.pl" target="_blank" rel="noopener noreferrer">www.sensusmed.pl</a> [<a href="http://www.sensusmed.pl" target="_blank" rel="noopener noreferrer">1</a>] e: <a href="mailto:w.tomasz@sensusmed.pl" rel="noreferrer">w.tomasz@sensusmed.pl</a><br /><br /> <br /><br />Links:<br />------<br />[1] <a href="http://www.sensusmed.pl" target="_blank" rel="noopener noreferrer">http://www.sensusmed.pl</a></blockquote>
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<td style="padding: 0px; color: #333333; font-size: 14px; font-family: Arial, Helvetica, sans-serif;" colspan="2"><em>psycholog, psychoterapeuta, terapeuta tDCS<br /></em></td>
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<td style="padding: 0px; color: #333333; font-size: 14px; font-family: Arial, Helvetica, sans-serif;" colspan="2"><strong>Sensusmed Witold Tomasz</strong></td>
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<td style="padding: 0px; vertical-align: top; color: #333333; font-size: 14px; font-family: Arial, Helvetica, sans-serif;" valign="top">504288040 <span style="color: #ff94a3;">m: </span>789335047</td>
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<td style="padding: 0px; vertical-align: top; color: #333333; font-size: 14px; font-family: Arial, Helvetica, sans-serif;" valign="top">Kraków 30-303</td>
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<td style="padding: 0px; vertical-align: top; color: #333333; font-size: 14px; font-family: Arial, Helvetica, sans-serif;" valign="top"><a style="color: #1da1db; text-decoration: none; font-weight: normal; font-size: 14px;" href="http://www.sensusmed.pl" target="_blank" rel="noopener noreferrer">www.sensusmed.pl</a> <span style="color: #ff94a3;">e: </span><a style="color: #1da1db; text-decoration: none; font-weight: normal; font-size: 14px;" href="mailto:w.tomasz@sensusmed.pl" rel="noreferrer">w.tomasz@sensusmed.pl</a></td>
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