Erlanger Health System is moving ahead with the purchase a $4.5 million high-tech scanner that executives hope will serve future cancer and neuroscience centers at the hospital.

A state health planning board approved the hospital's "certificate of need," which is a permit that allows health care institutions to undertake major projects.

The scanner the hospital plans to buy combines images from a PET scan and a CT scan. A CT scan shows tissues and organs inside the body, while a PET scan reveals any abnormal activity that could be happening in those organs.

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