Hi dlgoff,
Iron wouldn't be approved. It has to be biologically inert. It takes years to get any new materials approved for implanation, which is why I want to us one of the ones that is already in use.
@berkeman
In theory the ultrasound concept would work well. In practice, though, there are a few problems with it that I can't think of a way around. The ultrasound transducers are too large and heavy, which creates more issues. The transducers will probably move in relation to the skin because...
@joelupchurch
I did think of using hall effect sensors but my understanding of them is that they only detect movement toward and away from them and not across the face of them. I thought of creating an array of them so that only the one directly over the magnet would detect anything, but the...
The problem with fluoroscopy is firstly the radiation (which although small, will still put off a lot of people) and secondly the small size of the detector head, which means that the subject has to run and then pivot at a very specific spot in the room or else it won't get recorded. Also, most...
Thanks for both your responses.
I can see that we're not going to get very far if I don't give you more information, so here it is.
I'm trying to work out a way to improve motion capture accuracy and specifically at the knee. This is for medical research to record small movements of the...
Hi berkeman. Thanks for your reply.
No, it's not for a competition. It's for an application related to my work.
Visual methods won't work because the gel-foam is opaque. I don't necessarily have to use the metal bead. It was just one solution that I came up with within the constraints of...
I'm trying to design a position sensor for a specific application but the last time I thought about physics was a long time ago.
The situation is *similar* to this :
I have a block of wood with an irregularly shaped tantalum bead (diameter of about 2mm) embedded about 2-4 mm into the wood...