3 ms·
Nah, this only works if you’re willing to leave the ice pick there, because the ice pick will have a wildly different speed of sound than the bone or brain, and
by amluto 2y ago
Nah, this only works if you’re willing to leave the ice pick there, because the ice pick will have a wildly different speed of sound than the bone or brain, and it will scatter the ultrasound strongly as a result.
- sfink 2y agoYeah, that's fair. I guess you have to make the ice pick out of tofu.
- TeMPOraL 2y agoGosh, you're both making this harder than it needs to be. Just use a drill. Drill all the way to the target point, push the transmitter to the end of the borehole, and fill the rest with tofu. This way you minimize acoustic artifacts not just from the test equipment, but also from shattered skull bone fragments. This would also let you take a continuous linear single-axis scan - just keep the transmitter running as you pull it out slowly, letting tofu flow around it.
- fragmede 2y agoWhat if it's a really skinny ice pick? Apparently if you're really good, you can actually find the part of the brain that has to do with addiction and zap it. They use ultrasound after getting it to work with a metal probe. https://youtu.be/7BGtVJ3lBdE?t=837 https://youtu.be/7BGtVJ3lBdE?t=837