Table 3:

Diameters of the inferior petrosal sinus and sigmoid portion*

StructureRight Side (mm)Left Side (mm)
Inferior petrosal sinus†3.5 (2.3–5.5)3.6 (2–5.7)
Sigmoid part†
    Anteroposterior8.7 (8–9.4)7.7 (6.9–8.5)
    Left-right direction10 (9.3–10.7)8.8 (8–9.6)

  • * Data are mean (range).

  • † Measured on CE-MRA.