I am a Surgical Tech~I worked for a little over a year on an organ procurement team traveling to different hospitals (and morgues) to harvest organs for transplants. It was an adrenaline rush each day that I worked but also very wearing emotionally when it involved young donors..If I was younger and didn't have a family I mostly likely would have continued for a while longer. It was 24 hr call and the pace was at times very tiring both mentally and physically. I now work as a Clinical Tech/Medical Rep with breast cancer PT in the OR during surgery and LOVE my job!
If you like Radiology you might want to consider Nuclear Medicine Tech, which is a sub-specialty of a Rad Tech.
Don't let Math hold you back~dive in and you will see that it will all come to you if you are truly determined.