TABLE 4.
Hemodynamic indexes for waveform analysis at post-lesion regions of aneurysm (Case I) and stenosis (Case II). A comparison between PRI and PSI.
| Case Number | Point Location | Pulsatility Index | Resistance Index | S/D Ratio | Phase Shift | ||||
|---|---|---|---|---|---|---|---|---|---|
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| PRI | PSI | PRI | PSI | PRI | PSI | Δt | Δϕ | ||
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| Case I | #1 | 1.82 | 0.69 | 0.84 | 0.49 | 6.36 | 1.95 | 0.03 | 10.58 |
| Case I | #3 | 0.34 | 0.68 | 0.29 | 0.48 | 1.40 | 1.93 | 0.11 | 38.82 |
| Case I | #4 | 0.59 | 0.47 | 0.43 | 0.37 | 1.75 | 1.59 | 0.03 | 10.58 |
| Case I | #5 | 0.97 | 0.89 | 0.61 | 0.58 | 2.59 | 2.37 | 0.02 | 8.47 |
| Case II | #2 | 1.06 | 0.64 | 0.67 | 0.47 | 3.03 | 1.90 | 0.02 | 6.95 |
| Case II | #3 | 0.65 | 0.53 | 0.45 | 0.41 | 1.84 | 1.71 | 0.38 | 106.05 |
| Case II | #4 | 1.18 | 0.50 | 0.66 | 0.39 | 2.94 | 1.66 | 0.28 | 78.14 |
| Case II | #5 | 0.56 | 0.42 | 0.43 | 0.34 | 1.76 | 1.53 | 0.04 | 11.16 |
PRI: Pre-intervention, PSI: Post-intervention. Δϕ: Phase shift in degrees. Δt: Time difference between PSI and PRI velocity wave peaks. S/D: systolic/diastolic ratio