Table 3.

VGAM volume calculated with the semiautomatic method and with the ellipsoid formula for both readers

VGAM volume (cm3)	R1 med (IQR)	R1 (min–max)	R2 med (IQR)	R2 (min–max)
3D Slicer	4.7 (3.24–7.49)	0.25–17.84	5 (3.01–8.21)	0.3–18.2
Ellipsoid formula	4.2 (2.46–7.71)	0.18–18.40	5.2 (3.51–8.42)	0.7–21.33

IQR interquartile range, Max maximal, Med median, Min minimum, R1 reader 1, R2 reader 2, VGAM vein of Galen malformation