Agradecimentos: The Nuclear and Energy Research Institute (IPEN-CNEN), Sao Paulo, Brazil, kindly supplied the radiopharmaceuticals used in the present project (IPEN/UNICAMP agreement 01342000458/2017-15). Financial support was provided by FAPESP (Fundacao de Amparo a Pesquisa do Estado de Sao Paulo, grants 2009/54065-0 and 2018/00654-4). Celso Ramos has a research grant from CNPq (National Council of Research, ...