“…Therefore, evaluation of the anatomy of the cerebral small veins is critical for choosing an optimal surgical strategy (Table 2). Brzegowy et al used CT angiography to retrospectively analyze the anatomy of internal cerebral veins (ICVs), Galen veins GV, basal veins BV, and other deep cerebral veins and their branches in 250 subjects, excluding cerebral parenchymal and vascular diseases, and attempted to establish a new classification for these veins (Brzegowy et al, 2019(Brzegowy et al, , 2021. The results showed that in 77% of the cerebral hemispheres, the thalamostriate vein was the only main tributary of the ICV, and this type was considered normal anatomy (Brzegowy et al, 2019).…”