Brain damage due to drugs,positron emission tomography (PET) scans. The brain at left is that of a control subject who had not taken drugs,while the brain at right is that of a methamphetamine abuser tested 80 days after detoxification. The tracer used,contained the radioactive isotope carbon-11. The red areas show high concentrations of dopamine transporters,reductions of which are associated with decreased cognitive and motor function. The concentration (key at right) is lower in the drug abuser,indicating long-term damage. Methamphetamine (meth) is also known as 'speed'. The results of this study were published in 2001 | |
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Credit: | Science Photo Library / Brookhaven National Laboratory |
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