Viewing profile — raffihotter

Thanks for sharing this! Linked it on the website.

I added an explanation to the page! Hope it's helpful.

im still working on ultrasound stuff, but specifically for BCI! https://news.ycombinator.com/item?id=42021450

fixed! sorry about that, and thanks for the feedback

Hmm, looking into this.

Totally agree regarding not extrapolating to 10 MHz. I had went down a huge rabbit hole to find the source for the 22 dB/cm/MHz paper that everyone quoted. People reference the Dia…

To open the BBB, I believe you either need (1) microbubbles or (2) much higher pressures than what we'd use. Ref: https://pmc.ncbi.nlm.nih.gov/articles/PMC9029131/

You don’t. The bubbles only form once the skull is outside the body. When it gets out of the body, the gaps that used to be filled with water get filled with air.

To my knowledge, transcranial doppler doesn’t form images. It just gives you a single channel measurement that is very low resolution. The method we’re proposing would have mm reso…

Precisely

Thanks for your questions! I was one of the people who worked on the project. To answer your questions: > Is it fair to say that their claims about spatial resolution being >>> exi…

200x compression on this dataset is mathematically impossible. The noise on the amplifier and digitizer limit the max compression to 5.3x. Here’s why: https://x.com/raffi_hotter/st…

Hi HN! We're building a micro-campus and community for young people filled with curiosity and kindness. There will be a rigorous COVID protocol and it will operate as a bubble with…