Perhaps this is a silly question, but it's on my mind so I'll ask anyway.  My dad is currently being treated for cancer and is having radiation every day for the next 3 weeks.  I haven't seen him since he started the radiation therapy, but I'm just wondering if there is any ill effects for us ICers from being in close contact with someone who is receiving lots of radiation.  I only ask because I could go see him tomorrow after he has his daily dose in the morning or I could wait til Sunday when he'll have had 48 hours off from being "irradiated". 

I feel silly asking this - as clearly his cancer isn't about me- but I dont want to end up with extra  pain and not be present enough to support him if I can help it!