Figure 3.

(a) CMR SSFP still frames showing the AVS (dotted line) sited in between the hinge of TV and the hinge of MV. The image clearly shows the EAT (asterisk) in between the RA wall and the crest of IVS. This particular anatomical arrangement has been named “atrio-ventricular muscular sandwich.” (b) Anatomic specimen showing the offset arrangement between the hinges of the tricuspid and mitral valves (arrows), the AVS (dotted line), and the EAT (asterisk) (see text). IA = Interatrial. AVS = Atrioventricular septum, CMR SSFP = Cardiac magnetic resonance steady-state free precession, TV = Tricuspid valve, MV = Mitral valve, RA = Right atrial, IVS = Interventricular septum, EAT = Epicardial adipose tissue