Hi Sophie,
I am honestly very pleased to hear that your Husband will do the radiation treatments. It is all about ensuring survival at this point.
You will find lots of information and support on here to get you both through the radiation phase of treatment and beyond.
Your Husband may be one of the lucky ones who sails through without many effects at all. If not, come here and we will all try to help. So many here who have been there and done that.
Christine generally gives loads of helpful and important advice for getting through this phase.
As for the long term after effects, well you just deal with them as they come up. Honestly, you just cope and adapt. I can honestly say that Kris's quality of life is as good as before cancer. We just don't think of what has changed because this is life now, and he does do all that he did before ( if you take out the eating / speaking differences ) Life is wonderful, especially with loved ones to share it with.
Your Husband is lucky to have a great carer in you, it will make this so much easier on him.
I look forward to your updates, take care,
Tammy