Kevin,
I just wanted to say I sympathize with you and can't believe in America we actually have to have discussions like this. I hope you can find a metal detector lane. Did you check tsastatus.net?
Not too long ago I had to travel for a major operation and seriously debated laying down in the back of my mom's SUV for 15 hours instead of flying. We ended up renting a car and driving an extra two hours to get to a different airport to avoid the body scanners bc I didn't want to risk a rubdown after my surgery.
I was more worried about the TSA than my surgery. Something is definitely wrong here. I hope they keep their disgusting hands off you. Good luck.