Principle: The radiopharmaceutical’s active ingredient, joflupane, is a cocaine analogue that binds to the dopamine transporter and that is found on presynaptic nerve endings. The intensity and symmetry of radiopharmaceutical uptake in the nc. caudatus and putamen are assessed. Indications: differentiation of Parkinson’s disease and Parkinson’s plus syndrome group diseases (here the pathological finding on the scintigram) from other forms of Parkinson’s syndromes and essential tremor Patient preparation: 24 hours before the examination discontinue antiparkinsonian drugs 1 hour before the examination take 1 tbl. 1 hour before the first antiparkinsonian test, 1 hour of Chorigen, for thyroid blockage (he will receive it from us) Duration of examination: Approx. 3.5 hours (time after the radiopharmaceutical injection and the scan itself is 3 hours, the patient does not need to spend this time in the nuclear medicine department) Radiopharmaceutical: 123I – joflupan (DaTSCAN) Method of application: Intravenous Examination methodology: The radiopharmaceutical is injected intravenously into the patient. Approximately 3 hours after application, the patient is placed on the gamma table on his/her back and the head is fixed using a fixation device to reduce the risk of movement. Using SPECT methodology, the scan is performed, which takes approximately 30 minutes.