I’ve had a mediport for four years. They are generally just under the skin but they have a long catheter that runs in a vein. The x-ray is used so the surgeon can see the catheter as it is being inserted. The level of radiation is extremely low because the interventional radiologist has to be able to tolerate the procedure repeatedly over the course of a career. If you expect to be receiving chemo for any length of time you will come to appreciate the ease of use compared to an IV. Unfortunately most phlebotomists have not been trained to access your port so you will still get poked each time they need to draw blood.
Good luck and good life.
I’ve had mine for 5+years and it has come in handy for things. My Gastro Dr. was able to use it for my meds during my colonoscopy and I had it accessed by the Onc. clinic nurses and it was used for both of my carpal tunnel surgeries. Lab techs. don’t have the special needles needed to access them and don’t have the training needed either. On a couple of occasions I’ve had my blood draw through it by timing my port flush appointments with it. I used to be an X-ray Tech/Mammographer and know why the X-ray was done.