I was in ERROR. It was not an implanted radioactive kernel. It was a Radioactive Injection. NO Surgery. Rather than try to explain what I think ..
I Remember from 13 years ago...here is the "Current" website for
RadioCat.
http://www.radiocat.com/
When we got the cat back from Hartford we had to take particular care as to how we disposed of the Kitty Litter because it was considerd radioactive waste until the radiation wore off.
Whatever the particulars....the results were the same. NB