I am also intimately involved in CT Low Dose Lung Screening programs which are very similar to Breast imaging in how they are graded in the process of interpretation, and how they are followed up afterwards (with reminders to patients and physicians, etc.) to prevent something from falling through the cracks.
However, it does not carry the same emotional baggage that Breast Imaging seems to, I suppose because it involves both sexes.
As for Radiation, there is no such thing as a threshold dose of radiation. That is, a dose where if you remain under it, you are safe, and if you go over it, you get cancer.
Just going out into sunlight once and absorbing a photon can start a cancer, and other people get exposed to a lot of radiation, and don’t get cancer. The human body is quite odd in this respect, partially because radiation has had a role in human development over the eons. We wouldn’t be where we are without radiation-caused mutation, which to a degree, is a normal thing for our species.
But it is best to minimize the chances by keeping the exposures low!
As for Radiation, there is no such thing as a threshold dose of radiation. That is, a dose where if you remain under it, you are safe, and if you go over it, you get cancer.
There is no guarantee a person will never get cancer, as the causes are multiple.