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. 2021 Feb 6;18(7):1699–1710. doi: 10.7150/ijms.54891

Figure 2.

Figure 2

Parameters measured in this study. A, CTA shows the sites at which the diameter of the beginning (1) and termination (2) points of the ICV and the termination (3) point of the BV were measured. B, CTA shows the length (4) of the ICV. C, CTA shows the length (5) of the VG, the width (6) of the beginning of the SS, the thickness (7) of the VG termination point, and the length (8) of the SS. D, CTA shows the width of the VG (9). E, CTA shows the thickness of the beginning of the SS (10). F, CTA shows the angle at the VG and SS transition area (asterisk). Abbreviations: ACA, anterior cerebral artery; BV, basal vein; CTA, computed tomography angiography; ICV, internal cerebral vein; MIP, maximum intensity projection; O-I, outside to inside; S-I, superior to inferior; SS, straight sinus; VG, vein of Galen.