| Volunteers N = 25 | Patients N = 25 | ||
---|---|---|---|---|
Angle measurements | At annulus | At peak velocity | At annulus | At peak velocity |
Angle annulus - long axis (angle 1) (degree) | 95 (3) | 95 (3) | 98 (9) | 98 (9) |
Angle of inflow at E (respectively angle 2 and 3) (degree) | 83 (9) | 85 (8) | 88 (8) | 79 (12) ** + |
Angle between long axis and inflow at E (difference between angle 1 and 2/3) (degree) | 12 (9) | 10 (8) | 10 (10) | 19 (11) ** ++ |
Angle of inflow at A peak (degree) | 77 (8) | Â | 85 (12) ++ | Â |
Distance annulus level to peak velocity level (mm) | Â | 14 (6) | Â | 15 (6) |
Reformat plane | At annulus | At peak velocity level and angulated perpendicular to inflow | At annulus | At peak velocity level and angulated perpendicular to inflow |
Flow volume (ml) | 78 (21) | 77 (20) | 66 (18)+ | 70 (20) ** |
Aorta flow (ml) | 75 (22) | 69 (21) | ||
Difference with aorta flow (mL and Limits of agreement) | -2.2 (6.1) -14.1;9.6 | -2.0 (6.1) -14.1;10.0 | 2.6 (7.6) -12.3;17.5 | -0.9 (4.5) -9.7;7.9 |
Absolute error (mL) | 5.0 (4.5) | 4.4 (5.0) | 5.9 (5.4) | 3.6 (2.7) * |
Correlation with aorta flow (R square) | .923 | .922 | .872 | .954 |
Peak flow rate E (ml/s) | 452 (123) | 500 (118) ** | 406 (82) | 414 (82) + |
Peak flow rate A (ml/s) | 192 (67) | 194 (72) | 201 (66) | 201 (70) |
Peak velocity E (cm/s) | 71 (15) | 85 (14) ** | 68 (19) | 94 (25) ** |
Peak velocity A (cm/s) | 36 (18) | 41 (18) ** | 40 (18) | 47 (20) * |
E/A ratio from peak flow rate | 2.5 (0.7) | 2.8 (0.8) * | 2.2 (1.0) | 2.3 (1.1) |
E/A ratio from peak velocity | 1.8 (0.9) | 1.9 (0.9) | 1.6 (0.5) | 1.8 (0.6) ** |