“People often quote 22 dB/cm/MHz attenuation of ultrasound. Decibels are a logarithmic scale, so with 1.4 cm of roundtrip skull distance, and typical fUSI frequencies of 10 MHz, this would be 14 orders of magnitude of attenuation! In physics, there's a word for 14 orders of magnitude of attenuation. It's called zero, i.e., you will measure nothing.

But where did the 22 dB/cm/MHz attenuation number come from? We were skeptical…”

Skulls Unlimited really has their branding on point. I might just have to get one for the holidays.

When people "donate their body to science", they don't usually expect their parts getting sold to the public. But that's the reality of it.

There’s a recent two part podcast about selling bones online, https://www.iheart.com/podcast/1119-sixteenth-minute-of-fame....

Part 2 has an interview with a law professor that specializes in death and what happens after people die. Fascinating!