Use of imaging tests soars, raising questions on radiation risk

Study finds use of CT scans has nearly tripled in the last 15 years. Such radiation exposure increases the risk of cancer.The use of CTs, MRIs and other advanced medical imaging tests has soared over the last 15 years, according to new research that raises questions about whether the benefits of all these scans outweigh the potential risks from radiation exposure and costs to the healthcare system.

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