LOOKING INSIDE THE BODY WITHOUT SURGERY
THANKS to advances in computers, mathematics and science, the scalpel are giving way to nonsurgical tool in the diagnosis of certain diseases. Besides X-ray imaging, now over 100 years old, the technologies include computed tomography (CT scan), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), and ultrasound imaging, or sonography. * How do these techniques work? What are their health risks? And what are their advantages?
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