title: Imaging the dopamine system to assess disease-modifying drugs: studies comparing dopamine agonists and levodopa.
mesh_terms: D000978:Antiparkinson Agents / Q000009:adverse effects / Q000627:therapeutic use*; D015415:Biomarkers / Q000032:analysis; D002986:Clinical Trials as Topic / Q000706:statistics & numerical data; D003952:Diagnostic Imaging; D018450:Disease Progression; D018491:Dopamine Agonists / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D007980:Levodopa / Q000009:adverse effects / Q000627:therapeutic use*; D010300:Parkinson Disease / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000188:drug therapy*; D011877:Radionuclide Imaging; D016896:Treatment Outcome
chemical_list: D000978:Antiparkinson Agents; D015415:Biomarkers; D018491:Dopamine Agonists; D007980:Levodopa