this post was submitted on 08 Dec 2025
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I remember my senior advisor student tellimg me a story how she went to industrial lab internship in a hospital with these things.
They had their own little collider there. They made synthetic radioactive cocaine to study something in the brain.
They didn't measure the drug dosage, they just filled the syringe and waited holding it near a radiation counter for radiation to drop to desired level.
Once she spilled something and dipped her hand in it. She was told to hold a hand away rfom the body for a day - on a train ride home, in shower, in sleep - to protect internal organs. Next day, radiation was gone, down to natural level.
These things are amazing.
Would love to know how many sieverts per hour, though given it was cocaine I assume it was almost entirely beta radiation from light elements?
Not your regular beta, it's PET - so it's positrons that didn't live too long.
If that's the case it's probably the annihilation gamma at 511 kev which is justifiably scary