Karen you only need a mammogram if the thermography shows there is a problem otherwise you do not, if you read the website you will see the US FDA has approved it for breast screening, i am suprised that no-one in the states has heard of it, from my understanding that is where it all began, and the registered nurse who is the technician who does the procedure had to go to the states to complete her training, it costs the doctor about 100 thousand dollars to set it up, so i guess that is why many don't, some how i think i will be sticking to the old method,even though it can be a tad painful at times,at least it is proven, i just like the aspect that the thermography has no radiation, and is pain free as well.