Harvard Health Blog

Imaging tests: Using them wisely

Posted December 11, 2015, 9:00 am Ashish K. Jha, M.D., M.P.H., Contributing Editor Follow me at @ashishkjha Half a century ago, physicians had few options for diagnostic tests to obtain images of the body. Worried about a brain tumor? A physician might order a pneumo-encephalogram (PEG), which entailed injecting air into the spinal cord and taking x-rays of the head, hoping to spot an abnormality. Tests like these were painful and ineffective, leading physicians…

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