you get a mammogram, that s one whether it increases. for a chest ct scan, you get three years worth. so this whole business about x-rays and cts, they re not kidding when they say there s a lot of radiation. more than what you naturally get, months and years worth, they re compared with what you normally get walking around. but i want to underscore they re not considered dangerous levels. we re able to sustain that. it is increased but not to the point where unless you ve had a lot of ct scans or x-rays in a short amount of time, shouldn t be concerned. let s talk about things that we can remember in terms of radiation damage. think about chernobyl. yeah. that s a worst-case scenario. we had mention it s three millie sieve erts a year. when you look at chernobyl, workers there were exposed, we re talking about 124 workers, exposed to levels between 800 and 16,000 millisieverts. so 3 is normal in a year? 3 is normal in a year.