Table 2.

The average features of the vascular tree of 175 healthy adults and the average percentage difference between the left and right hemispheric vascular geometric features within the healthy subject databases

	Average global features	Left vs. right hemisphere average difference %
Total length (m)	3.30 ± 0.65	30.57 ± 13
Number of branches	178.6 ± 30.62	18.06 ± 4.09
Average branch length (mm)	18.79 ± 5.67	31.15 ± 6.75
Maximum branch length (mm)	121.50 ± 21.02	23.36 ± 4.56
Average diameter (mm)	2.36 ± 0.34	3.21 ± 0.56
Total volume (ml)	89.92 ± 17.78	26.04 ± 9.44
Fractal dimension	1.64 ± 0.37	11.09 ± 0.97
Tortuosity (rad/cm)	4.17 ± 1.03	16.16 ± 2.76

All the data represent mean±standard deviation unless otherwise indicated. rad: radians