The radiation problem of CR

The effects of a chest X-ray are relatively minor, a lumbar X-ray may be relatively major, but the effects of 4 X-rays in a row are not enough to worry about.

CR is a much smaller dose than CT, and the vast majority of patients who have CT don't have any after-effects, right?

And as a routine diagnostic modality, x-rays are recognized for their safety.

But your doctor was irresponsible, and as a medical professional, he should have minimized the dose to the patient.