Medical diagnostics were revolutionized in the last few decades by imaging technologies that allow physicians to look inside your body to find out what is wrong without having to open you up.
While ordinary x-rays, which were introduced over a century ago, remain with us to diagnose bone fractures, ultrasound, computerized tomography (CT) scans and magnetic resonance imaging (MRI) have been joined by nuclear medicine imaging, including positron-emission tomography (PET). Each technology has different uses and benefits.
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Source: Breaking Israel News