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By Mandalorian · Posted
Hello everyone. Newbie here. I am curious if anyone has created 3D models that are used as ultrasound phantoms for teaching purposes. I would like to create models of limbs, torsos, etc... that can simulate muscle, subcutaneous tissue, nerves, vessels, where I can teach MSK and regional nerve block ultrasound. It seems clear that I can use PLA or PETG to simulate bone very easily, but I was wondering if anyone has used TPU (or other filament) and whether sound waves penetrate TPU. Thanks -
By tsehrhardt · Posted
Yes definitely! I would definitely like to see it applied more to unidentified remains. -
Do any of you print 3d models to sell? This is a good article to keep in mind. ==== If you’re running a 3D printing service, or a product development company where you’re quoting customers on digital fabrication services, there’s a good chance that you’re pricing wrong. Here’s how I know. In the last five years, I’ve spoken to hundreds of 3D printing/Additive Manufacturing business owners about how they price their services and a vast majority of them undersell their services. The three primary reasons are either a combination or one of the following: They don’t take into account all of the ancillary components that go into running a business. They charge purely based on the volume of the CAD model not taking into account exponential price increases or decreases. Taking their slicer output of time to print and material usage too literal without physically measuring those parameters and taking into account #1 above. Based on those hundreds of hours of conversation combined with years of industry experience, I’ve developed a holistic methodology on how to price for 3D printed parts and projects that accounts for all aspects of the business (human/machine time, machine depreciation, software, facility cost) the size of the job, and the unique attributes of the parts. I’ll share that methodology with you today, but first, a little more context on how I got here. Mike Moceri, the founder and CEO of MakerOS. Back in 2013, while I was running a 3D printing service bureau, my team and I received an order from a Fortune 500 company to print them approximately 15,000 individual parts for a toy line. At the time, we were charging a little less than $1 per cubic centimeter printing in PLA and Nylon PA12, and that’s how we ended up pricing them for the job. The project ended up being a very challenging one (that’s a whole different story that you should ask me about at some point) and after some time gaining more experience over the years, I realized that, considering how immensely large the job was, we should have priced about 70% more than what we originally quoted. There’s a lot we didn’t factor for: the manual time it takes to prep, slice, validate, think through how to plate up and pull off parts; the software costs to execute all of those tasks; how long it actually took to print parts accounting for machine depreciation. It was quite a learning experience – in fact, it ultimately changed my life because I decided to do something about it, and I’m still doing it today. View the full article -
I remember seeing 3D printed skulls from CT scans many years ago at JPAC, the Joint POW MIA Accounting command based at Pearl Harbor in Hawaii. It was a pretty cool idea to study the 3D printed models so that the original remains could be buried, thus giving families closure, etc. I think there is great potential in anthropology for this type of technology. -
By Candace Moore · Posted
Not all the algorithms are based on different threshold values. I don't mean to get super-technical, but I am a somewhat skilled programmer for a very limited number of things. It's a super-simple algorithm to simply put a threshold on HU. There are a bunch of other approaches algorithmically. You can also threshold based on texture analyses even in 3D slicer. I could go on here for ten paragraphs, but trust me there are a lot. AI based segmentation that is pretty accurate is available for some things...but the ones I have seen were custom built by companies for a particular entity looking to segment something specific e.g. just segment out the lungs into bronchopulmonary segments.
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