I had to have a Cat scan yesterday. I didn't drive the RV or the bulldozer, and I also didn't bring my pet cat. But they let me in anyway. That got me thinking, so I did some quick Google searching. This led me to the following on cat scan radiation: 25 cat scans = 10,000 chest x-rays 3.6 roentgen (reported initial radiation at Chernobyl because the meters only went up to 3.6) = 400 chest x-rays 1 cat scan = 3.6 roentgen Therefore, I was exposed to Chernobyl yesterday. And my scan was "not great, not terrible" (hernia), so this math makes sense and makes me laugh. I have no idea what type of x-ray either of the above references referred to, since my understanding is new digital x-rays have far, far less radiation than x-rays of old.