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FIG 2. [123I]R91150 SPECT images in a control subject, a recent MDMA user, and an ex-MDMA user. Transverse slices from the brain at the level of the basal ganglia, approximately 3 cm above the orbitomeatal line. In the three images, the level of [123I]R91150 activity is color-coded from low (black) to high (white) and scaled to the maximum in the slice obtained in the control subject. The three images are representative of the three groups: in the control subject, there is normal [123I]R91150 binding, in the recent MDMA user, low [123I]R91150 binding, and in the ex-MDMA user, high [123I]R91150 binding
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