[Simnibs-discuss] [EXTERNAL] Re: SimNibs simple volumes
Oula
oulap at drcmr.dk
Tue Jun 21 09:43:03 CEST 2022
Hi Ben,
The files you created (at least the .stl) are surfaces. To use these in
SimNIBS simulations you need volume meshes, i.e., tetrahedral meshes.
I'm not familiar with .obj files, but you'd need to create volume meshes
from the surfaces to import them into SimNIBS. To get started you can
look at the .geo file that headreco generates. The name should be
something like <subid>.geo. You can use that how to set up the .stl
files to create a volume using gmsh. However, the surfaces need to be
nested for that to work.
Best,
Oula
On 6/20/22 19:05, Benjamin Tessler wrote:
>
> Hi Axel,
>
> Thank you for the response. I’m trying to learn how to import various
> volumes that I made in Autodesk, which exports STL and OBJ file
> formats. I can’t see any documentation on how to either import that
> into SimNIBS or convert it to nifti. It doesn’t import when I tried to
> convert it to a msh file from the gmsh software. Maybe is there a
> matlab script that can easily write nifti from an STL fomat?
>
> Best,
>
> Ben
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
> Windows
>
> *From: *Axel Thielscher <mailto:axelt at drcmr.dk>
> *Sent: *Monday, June 13, 2022 5:57 AM
> *To: *Benjamin Tessler <mailto:benjamin.tessler at downstate.edu>;
> discuss at simnibs.org
> *Subject: *[EXTERNAL] Re: [Simnibs-discuss] SimNibs simple volumes
>
> External email
>
> /Do not click links, open attachments or provide your User ID or
> Password if the sender is unknown./
>
> Hi Benjamin,
>
> please try out simnibs 4 which is available as beta release.
>
> https://github.com/simnibs/simnibs/releases/tag/v4.0-beta1
> <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fsimnibs%2Fsimnibs%2Freleases%2Ftag%2Fv4.0-beta1&data=05%7C01%7Cbenjamin.tessler%40downstate.edu%7Cef823821e0f14609415108da4d232160%7C22670793760f482993153e427c362e69%7C0%7C0%7C637907110528316982%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=hr9UiRptmBkHE1T5eddNWA%2BhEAmaGte08wgOEgf3rwo%3D&reserved=0>
>
> It has new options to use custom-made meshes.
>
> After installation, click on index.html in the docs-folder to see the
> documentation for simnibs 4. Then follow the tutorial "How to create
> and use a custom mesh".
>
> Best,
>
> Axel
>
> On 08-06-2022 20:16, Benjamin Tessler wrote:
>
> Hi,
>
> I’m trying to just stimulate a block. What CAD do you recommend to
> use? I’m using Autodesk fusion 360 to make STL files. Then I use
> gmesh to make a msh file, but it won’t import into simnibs. Is
> there a simple way to make simple volumes?
>
> Best,
>
> Ben
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986>
> for Windows
>
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> Danish Research Center for Magnetic Resonance
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