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Quantification of tortuosity and fractal dimension of the lung vessels in pulmonary hypertension patients.

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Academic year: 2017

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Figure 2. Flowchart of the automatic vessel extraction algorithm. (top) Sample CT image, (2 nd row) lung, airway segmentation and the vessel enhancement filter response superimposed on the CT image, (3 rd row) vessel enhancement filter response restricted
Table 2. Values of distance metric, fractal dimension and number of vessel segments.
Figure 3. Correlation of distance metric with patient clinical parameters. Correlation of distance metric with (A) mean pulmonary arterial pressure (mPAP), and (B) pulmonary vascular resistance (PVR; R = linear correlation coefficient, r = Spearman correla
Figure 5. Correlation of fractal dimension with clinical parameters. Correlation of 3D fractal dimension (FD) with (A) mean pulmonary arterial pressure (mPAP), and (B) pulmonary vascular resistance (PVR; R = linear correlation coefficient, r = Spearman cor

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