Table 2.
Score | Overall image quality | Systemic arteries | Pulmonary arteries | Pulmonary veins | Valves | Ventricles |
---|---|---|---|---|---|---|
5 | Outstanding; small arteries with high SNR and well-delineated | Both coronary origins well seen | Arteries seen to within 1 cm of pleura | Can sharply see entrance to LA for all veins | Sharp on all phases | Sharp trabeculae |
4 | Excellent; medium arteries with high SNR and well-delineated | One coronary origin well seen | All segmental arteries well seen | Can sharply see entrance to LA for some veins | Sharp | Trabeculae seen |
3 | Good; all medium arteries can be assessed | Arch vessels well seen | Most segmental arteries well seen | Can see entrance to LA of all veins | Blurred | Sharp border |
2 | Diagnostic; all but 1–2 medium arteries assessed | Aorta well seen | Lobar arteries well seen | Can see entrance to LA of some veins | Partially seen | Can segment |
1 | Limited assessment of several medium arteries | Aorta not well seen | Right and left pulmonary arteries well seen | Cannot see entrance to LA | Not seen | Cannot segment |
LA left atrium, SNR signal-to-noise ratio