Table 3. Correlations with clinical parameters (Spearman r and p-value) for n = 24 patients.
| r (p) | Distance metric | Fractal dimension | No. vessel segments |
| mPAP | 0.60 (0.002) | −0.30 (0.15) | 0.01 (0.97) |
| PVR | 0.59 (0.002) | −0.34 (0.10) | −0.11 (0.61) |
| AVDO2 | 0.54 (0.007) | −0.37 (0.07) | 0.08 (0.68) |
| art SO2 | −0.54 (0.006) | 0.47 (0.02) | 0.15 (0.48) |
| ven SO2 | −0.68 (0.0002) | 0.38 (0.07) | −0.06 (0.77) |
| Age | −0.12 (0.57) | −0.24 (0.24) | −0.37 (0.07) |
| BSA | −0.04 (0.83) | 0.03 (0.89) | 0.08 (0.68) |
mPAP: mean pulmonary arterial pressure, PVR: pulmonary vascular resistance, AVDO2: arterial-venous difference in oxygen content, art SO2: arterial oxygen saturation, ven SO2: venous oxygen saturation, BSA: body surface area after Dubois and Dubois.