How does DaTscan help diagnose Parkinson's disease?

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DaTscan helps doctors diagnose Parkinson's disease by making it possible to see the transfer of dopamine (a neurotransmitter) in the brain during single photon emission computed tomography (SPECT) scans. This helps doctors diagnose Parkinson's in people who have tremors that could be caused by other conditions. People with Parkinson's disease have a reduced number of dopamine-producing cells in their brains, which causes them to have tremors and difficulty moving.

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