1 Clinic for Nuclear Medicine and Competence Center for Thyroid Diseases, Imaging Institute of Southern Switzerland, Ente Ospedaliero Cantonale (EOC), Bellinzona, Switzerland - luca.giovanella@eoc.ch.
2 Clinic for Nuclear Medicine and Interdisciplinary Thyroid Center, University Hospital and University of Zurich, Zurich, Switzerland - luca.giovanella@eoc.ch.