Table 1:

Cross-sectional area measurements in the principal cerebral sinusesa

SinusCross-Sectional Area (mm2)
Before LPAfter LP
Right transverse40 ± 21b(4–76)52 ± 22(6–79)
Left transverse45 ± 20b(7.5–78)52 ± 23(8–78)
Superior sagittal52 ± 21b(17–88)54 ± 21(17–88)
Straight23 ± 13b(2–45)30 ± 16(4–48)

  • ↵a N = 4 patients. Data are reported as mean (range).

  • ↵b Significant difference (P ≤ .05) between measurements before and after LP.