Table 3.
Summary of hemodynamic parameters calculated from the simulated echo measurements using the VT
| Control | M&I P1 | M&I P2 | P2&P3 | P2&P1 | |
|---|---|---|---|---|---|
| VT-SVAV, mL | 79.63 | 72.13 | 59.47 | 31.17 | 23.77 |
| VT-SVMV, mL | 89.13 | 89.47 | 88.91 | 88.89 | 88.04 |
| VT-RVolMV, mL (%) | 9.50 (2) | 17.35 (18) | 29.44 (21) | 58.72 (24) | 64.27 (25) |
| 0.72 × VT-SVAV, mL (%) | 57.34 (−2) | 51.93 (1) | 42.82 (2.1) | 21.72 (6) | 17.12 (6) |
| 0.7 × VT-SVMV, mL (%) | 62.39 (−1) | 62.63 (−1.6) | 62.24 (1) | 62.22 (−1) | 61.63 (−2) |
| Corrected VT-RVolMV, mL (%) | 5.06 (−45) | 10.70 (−27) | 19.42 (−20) | 40.50 (−14) | 44.51 (−14) |
| CVAV + corrected VT-RVolMV, mL (%) | 9.66 (4) | 15.30 (4) | 24.02 (−1) | 45.10 (−4) | 49.11 (−5) |
Values in parenthesis denote the relative percentage error with respect to the ground truth values (i.e., FSI-RVolMV). The forward stroke volumes (SVs) calculated by the volumetric technique (VT) method from the aortic valve (AV) and the mitral valve (MV) are represented by VT-SVAV and VT-SVMV, respectively. The multipliers of 0.72 and 0.7 are correction factors used to compensate the error caused by nonflat velocity profiles at the orifices. Therefore, the calculated regurgitant volume (RVol) of MV based on the corrected stroke volumes from the AV and MV is represented by VT-RVolMV. CVAV + corrected VT-RVolMV represents an additional correction of regurgitant volume because of the closing volume of AV. Echo, echocardiography; CV, closing volume.