Then the patient gets a full-body gamma scan at a nuclear imaging center within 10 minutes and again three or four days later.

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In the third session the music alternated between enjoyed and neutral, while a functional magnetic resonance imaging, or fMRI scan was made.

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Then at about age 73, 700 study participants were given a magnetic resonance imaging (MRI) brain scan.

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The technique, called Image Guided Intensity Modulated Radiotherapy Treatment uses imaging provided by a CT scan to target the tumour before a powerful but precisely shaped radiation dose is administered.

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To avoid that issue, Dr. Muller envisions the technology as part of a strategy in which people would first be identified as at risk through a genetic test and a noninvasive imaging test such as a CT scan before being referred for the spectroscopy analysis.

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