Study: Too many x-rays increase cancer risk

At issue are those routine procedures currently in widespread use in hospitals across the US that emit a certain degree of ionizing radiation. That includes standard x-rays and more sophisticated CT scans as well as nuclear medicine screenings.

MRIs and ultrasounds do not use any radiation and are not the subject of this study.

Authors say today's diagnostic testing is not without potential risks and doctors should consider a patents history before ordering them.

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