I’ve been using 3D Slicer for a little while now and I love the program. However, I can’t help but feel that I can be reducing the amount of time I spend creating .STL files for 3D printing. I primarily work with bones, specifically the visualization of complex fractures, and here is my current workflow:
- Upload the DICOM and crop appropriate ROI
- Create a segment for the bone of interest (such as the pelvis and part of the sacrum/lumbar spine)
- Change thresholds until almost all of the cortical bone (the perimeter/shell of what I want to be printed) is covered
- Go through each individual slice one-by-one, painting and erasing as necessary until the final product is created and a complete model is generated
As you can imagine… this is incredibly time consuming. But I’ve had a lot of difficulty following some of the instructions or videos online…
Can anyone outline a “foolproof” methodology that may yield better results? I think the big issue for me is getting all of the cancellous bone (which will ultimately need to be filled for the 3D printing process) after I have my perimeter/shell defined. I recently downloaded the BoneExtension add-on because I saw a photo that shows a “before and after” use of the extension and it seems like what I want (cancellous bone filling) but I have no idea what buttons to check/what operations to perform. Would this method yield better results than seeding? Is there a way to seed the “inside” of what the perimeter I’ve defined so that the inside would essentially fill until it “meets” and touches the perimeter (cortical bone)?
Thanks for taking the time to read this. I’m open to any tips and tricks. Hopefully I can improve my prints and reduce the amount of time spent creating them.