? about Rad Techs VS Nuc Med Techs

My husband is applying to nuclear medicine school and will find out today if he got in. I've heard jobs around here are hard to find because the school is graduating more students than the turnover rate at the local hospitals... so I've been looking at other hospitals for openings..trying to plan ahead.
I have seen many Rad Tech job openings but no nuclear medicine. Are rad tech's and nuc med tech's the same??
The job description looks the same.. so I wanted to check and see.
Thanks!