Individual values for septal myocardial 6-[18F]fluorodopamine-derived radioactivity, in normal control subjects (white circles), patients with Parkinson disease without sympathetic neurocirculatory failure (PD no SNF, green circles), patients with Parkinson disease and sympathetic neurocirculatory failure (PD + SNF, blue circles), and the case reported here (large green circle). Dashed line shows the normal mean value and light green shaded area 2 standard deviations from the normal mean. Note markedly decreased 6-[18F]fluorodopamine-derived radioactivity in the current case.