Before we really understood x-rays and before ultrasound, x-ray was used to scan pregnant women. Not surprisingly, this resulted in many tragic birth defects and miscarriages, before researchers and doctors figured out what was going on.

Of course, it is a question of dose, but if a pregnant woman is the person of interest/around the POI and subjected to this multiple times, have they even considered that the dosage level could become harmful for the fetus?