Fig. 8From: Multimodal imaging of the tricuspid valve: normal appearance and pathological entitiesGrades of tricuspid regurgitation (TR). (a) Four-chamber steady-state free precession (SSFP) shows trace TR, extending just adjacent to the tricuspid valve (arrow). (b) Mild TR, with the jet extending just beyond the tricuspid valve into the proximal aspect of the right atrium (RA). (c) Moderate TR, with the jet extending to the middle third of the RA. (d) Severe TR, with the jet reaching the posterior wall of the RABack to article page