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tsehrhardt

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Everything posted by tsehrhardt

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. Version 1.0.0

    5 downloads

    ABD009 from the CT Lymph Nodes Collection of TCIA.

    Free

  7. Hi Peter, What are you using to combine multiple models? I have used Fiji to combine multiple STLs into one U3D that will expand into a model tree in Acrobat Pro, but it is very slow. Meshlab will create a U3D, but not from multiple models and not for large models. Thanks, Terrie
  8. 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.
  9. The images are not in order, so I will try to fix that!
  10. 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
  11. This method can be used to hollow a skin or bone model that contains internal surfaces connected to external surfaces.
  12. tsehrhardt

    Step A

    From the album: Hollowing Skin Model with Meshlab

    Import an STL. Go to Filters --> Color Creation and Processing --> Ambient Occlusion per Vertex. When the box opens up, check "GPU Acceleration" and click Apply. Click close after processing is complete.
  13. I am currently working on a publication that outlines some of these steps for working with heads. I can send you the part of the document that describes this. I also have a tutorial for pubic bones, but the steps for hollowing in Meshlab are the same:
  14. 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
  15. 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:
  16. Thanks so much for the suggestions! I will look into them. Do either of you know anything about the FEA module in Mimics?
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