ANTARES, the water of the Mediterranean has a second role, besides screening out radiation from above.

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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'

She has a doctor's order for the screening but has put it off, noting conflicting reports and concerns about radiation exposure.

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When cardiac CT angiography is being used appropriately -- meaning, for example, in people with chest pain suggesting blocked heart arteries, rather than as a screening test for people with no symptoms of heart disease -- the benefits far outweigh the risk of the radiation, according to Einstein and Hausleiter.

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