Hi Nicki,
actually it's new for me too. When I worked for Siemens dosing was done in "rads". Probably freaked too many people ("duck & cover" - Atomic Cafe, etc.) out so they changed it to "grays" or like the old term "(mega)cycle" changed it to "(mega)Hertz" for a guy named Hertz.

Wait a minute - are you saying that Tom hasn't even started radiation yet? He is going to be in for a major shock. I spent most of my time crawling on my belly like a reptile (and after the radiation had a strong resemblance to one).

A tip to the wise - lower your expectations. A positive attitude is important to be sure but a realistic approach and some good planning is vital also.

I used to wear a t-shirt "That which doesn't kill you only makes you stronger" - and it damn near did...