Table 2 Mean (\(\overline{x }\)) and SD values of tortuosity metrics studied in 127 left main bifurcations.
From: Accuracy of vascular tortuosity measures using computational modelling
Metric | LMCA | LAD | LCx | ||||
|---|---|---|---|---|---|---|---|
\(\overline{x }\) | ± SD | \(\overline{x }\) | ± SD | \(\overline{x }\) | ± SD | ||
Tortuosity index | \(\tau\) | 1.01 | 0.01 | 1.02 | 0.03 | 1.03 | 0.03 |
Average absolute-curvature | \({\kappa }_{a}\) | 0.40 | 0.11 | 0.51 | 0.10 | 0.50 | 0.08 |
RMS-curvature | \({\kappa }_{r}\) | 0.67 | 0.17 | 0.76 | 0.14 | 0.74 | 0.11 |
Average squared-derivative curvature | \({\kappa }_{d}\) | 0.06 | 0.03 | 0.08 | 0.03 | 0.07 | 0.02 |
