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tsehrhardt

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Posts posted by tsehrhardt


  1. Sharing for another anthropologist in case anybody here is interested in contributing their thoughts about sharing images and 3D models of human bones. 

     

    This is the link to a survey called "Perspective on the dissemination of three-dimensional models of human skeletal remains online in the United States." https://docs.google.com/forms/d/e/1FAIpQLSc-6lvKD9oPu69YVf_aWrnZC2JFNrBred_DM8Xj3xqfauNveQ/viewform

     

    Thanks!

    Terrie


  2. There are some muscle sets on Sketcfab but I haven't found any that are downloadable. The ATOR site (http://arc-team-open-research.blogspot.com/2013/12/modeling-muscles-and-skin-in-blenders.html) has posts on many facial reconstruction resources, primarily using Blender. I can't find whether Cicero Moraes has provided links to muscle models.

     

    If you are not familiar with Blender, Meshmixer might be easier to add primitives and deform them to the appropriate shapes. I have found that you can also import a skull two times into Meshmixer so that you can use the sculpting tools to "pull" the muscles or even tissue depth pegs from one skull mesh while leaving an intact/visible skull mesh underneath.


  3. I know! I just figured out how to create a dicom series in Slicer from the nrrd file. Mimics can read the dicom series, but I had to use Slicer to create the orthogonal views because that's where Mimics was getting hung up for me!


  4. Hi Diogo,

     

    I have started working with microCT and can't get them in to Mimics. However, I have had great success with 3DSlicer. It's very slow with the tiff stack, but if I import the tiff stack to Fiji and save it as a .nrrd file, then Slicer reads it much faster.

     

    Terrie

    P.S. What version of Mimics are you using? I have 17 and 18 and they both seem to have a hard time with tiff stacks.


  5. No problem! :) You need to go to All Modules, then Crop Volume, hit Crop and wait. Then you will see your slice windows change to the area you designated. When you go to Save, you will see that there is a second volume that says "subvolume". This is the cropped volume that you can save as .nrrd. This format can be reopened in Slicer or uploaded to the democratiz3d app to get a printable model.


  6. I printed a slice I made using the Easy Clip tool in Slicer. It works but you can see the facets on the top surface (just off by one layer it seems) that are not totally flat for some reason. The filament was not super fresh so it's a messy print. 

    20170422_093514.jpg


  7. You can see and adjust the cropping box in both the 3D window and in the slices below. In the 3D window, you can left-click and drag anywhere to rotate the volume and box around in 3D to see the adjustable points on each surface. The box always starts out around your whole volume, but you can grab the top dot (light blue) and drag it down.

     

    Crop Box.png

    CropBox2.png


  8. Ok thanks. I might have to try that. The EasyClip in Slicer looks like it gives me a flat plane, but when I slice it in my printing software, the top layer is not totally flat. I guess I'll just have to print it and see how it looks.

     

    PrintView.png

    Slicer_TopLayer.png


  9. Thanks Dr. Mike! I thought about trying something like that in Meshmixer too--using a plane and then Boolean subtraction. Does the cut in Blender give you a flat surface?

     

    I just searched through Slicer and found a module called EasyClip which lets you cut a 3D model, even without a DICOM volume loaded. I can enter the coordinates to cut at in the slice views and then the model is exportable. BUT my printer software is reading it all weird, so there must be some issues with the triangles or normals.

    EasyClip.png


  10. I came across how to use the "Create Pivot" tool in Meshmixer to more precisely place a "Plane Cut," but it doesn't always seem to place the pivot where I want it. My heads are in FH with nasion at x = 0 and I want to make cuts at precise distances from this point or at other known points from the origin (I have nasion at x = 0, left and right porion at y = 0 and z = 0). When I use the default pivot placement, it sometimes places it at the origin, which is perfect because I can use that or use the "Transform" tool to shift the pivot a specific distance.

     

    Anyways, even with the same settings, the pivot is not always placed at the origin, so I'm not getting a cut at 0 every single time. Has anybody played with this or have a better way of getting cuts at a precise location? Meshlab has a "Compute Planar Section" which lets me take a cut at say, x = 0, but then I have to extrude it to get a printable layer.


  11. On 7/12/2016 at 10:51 AM, Avi said:

    Hello to all -
     

    I have an .mxp file that was created in either 3Matic or Mimics (Materialise) that I would like to convert to .stl format.

    This is easily done in the software itself but I do not have the software, unfortunately.

     

    Can someone advise how I can convert this file into .stl or .obj?

     

    Many thanks!

    I believe .mxp is a 3-matic project file rather than a model file. I have 3Matic and can probably open it for you if it's something you can email.


  12. On 11/17/2016 at 2:14 AM, sercangizem said:

    I am looking forward to your work ,I had already studied your work before and I created a head using the 3d slicer, but I stuck it in the meshmixer.But I can not empty the head.

    Thank you for your comment! I have attached a gallery of screenshots showing how I use the Ambient Occlusion filter in Meshlab to hollow heads. It applies shading to your model and allows you to easily select internal surfaces to delete.

     

    I hope it helps!

    Terrie


  13. Hi James,

    If you export each of the separate STL models, you can combine them in Meshlab. Import both models into Meshlab, then go to Filters --> Mesh Layer --> Flatten Visible Layers. This will merge the 2 STL models into one that you can then export.

     

    I don't have experience printing with a dual extruder, so I can't help with how to specify the separate color, but I think Cura can handle that.

     

    Terrie


  14. Hi Rudy,

     

    There is a "Crop Volume" plugin in 3D Slicer that allows you to designate an ROI in the Volume Rendering tool, and then crop the CT volume to a subvolume which you can then use for rendering to 3D. I describe how to use it in my blog post here: 

     

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