well, maybe wearables that provide some sort of internal visual scans. But with CT scans delivering 70 times the radiation of a typical x-ray, I think I'd prefer not wearing a portable chernobyl.

Maybe a wearable ultrasound instead?

edit: after a little informal side-searching after posting this, I've learned that people working at Chernobyl, not in the reactor directly, but elsewhere in the sprawling site received anywhere from 1 to 100 CT scans worth of radiation. The firefighters that were on the roof received anywhere from 100 to 1,600 CT scans worth of radiation.