Xie B, Chen BX, Nanna M, et al. - A prospective study was performed to investigate relevant factors and clinical significance of atrial ¹⁸F-fluorodeoxyglucose (FDG) uptake in patients with atrial fibrillation (AF). Researchers enrolled a total of 100 AF patients who had undergone baseline FDG imaging prior to radiofrequency catheter ablation (RFCA). Among those individuals, 30 had undergone additional FDG imaging at 3 months post-RFCA. Voltage mapping of the left atrium was analyzed as a voltage score. It was shown that enhanced right atrial activity was correlated with increased BNP level, whereas left atrial (LA) activity was related to the elevated activity of EAT and inversely associated with LA fibrosis. In persistent AF patients, elevated RA activity was predictive of successful AF termination by RFCA.