High sigma-1 receptor (S1R) and very low dopamine 2/dopamine 3 receptor (D2/D3R) occupancy at clinically relevant doses of pridopidine in healthy volunteers (HV) and Huntington disease patients (HD): a F-18-Fluspidine and F-18-Fallypride PET study - Meyer, PM; Grachev, ID; Becker, GA; Bronzel, M; Marsteller, D; Voges, O; Rabinovich, L; Zientek, F; Rullmann, M; Sattler, B; Patt, M; Strauss, E; Kluge, A; Savola, JM; Gordon, MF; Geva, M; Hesse, S; Barthel, H; Hayden, M; Sabri, O (Nuklearmedizin - NuclearMedicine, 2020)