Cardiac Magnetic Resonance Imaging in a 7 Tesla Magnetic Field: Initial Experience with Hydrogen and Sodium Nuclei - Rochitte, Carlos Eduardo; Silva, Douglas Carli; Otaduy, Maria Concepción García; Chaim, Khallil Taverna; Nomura, Cesar Higa; Caramelli, Bruno (Arquivos brasileiros de cardiologia, 2023)