Breast cancer screening is in fact based on a radiation benefit ratio, not cost, but suppose that anaysis were to show that the screening should be different for black women, either earlier because of age as above, or avoided completely because of the lower rate of disease and higher radiation sensitivity in youger women making it more likely to kill than cure.

BBC: Race bias in cancer 'costing lives'

The study focused on head scans since the brain is believed to have heightened sensitivity to radiation.

WSJ: Childhood CT Scans Pose Cancer Risk

The many reports documenting a 5-10 year lag between radiation exposure and childhood cancer onset, plus elevated childhood cancer near nuclear power plants, illustrate the heightened sensitivity of the fetus and infant to toxins.

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