Table 2.
The maximum CSF pressure details and volumes of head substructures of the eight healthy subjects.
| Healthy Subjects | No. 1 | No. 2 | No. 3 | No. 4 | No. 5 | No. 6 | No. 7 | No. 8 | Mean | Standard deviation | Standard error | Coefficient of variation (%) | 95% Confidence interval | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Variables | Lower | Upper | ||||||||||||
| Maximum CSF pressure in SAS under BC “A” (Pa) | 599.6 | 699.1 | 719.1 | 704.2 | 589.3 | 594.3 | 710 | 584.3 | 650.0 | 62.5 | 22.1 | 9.6 | 597.7 | 702.3 |
| Maximum CSF pressure in SAS under BC “B” (Pa) | 575.2 | 622.8 | 655.1 | 614.1 | 515.6 | 570.2 | 641.5 | 495.1 | 586.2 | 58.0 | 20.5 | 9.9 | 537.7 | 634.7 |
| Maximum CSF pressure in SAS under BC “C” (Pa) | 505.4 | 508.5 | 515.9 | 499.1 | 462.1 | 489.2 | 510.7 | 454.9 | 493.2 | 23.0 | 8.1 | 4.7 | 474.0 | 512.4 |
| Maximum CSF pressure in CA under BC “A” (Pa) | 565.3 | 640.3 | 701.2 | 665.1 | 570.3 | 580.6 | 703.1 | 557.8 | 623.0 | 61.8 | 21.9 | 9.9 | 571.3 | 674.7 |
| Maximum CSF pressure in CA under BC “B” (Pa) | 569.5 | 597.4 | 636.8 | 583.3 | 492.1 | 529.3 | 598.8 | 485.1 | 561.5 | 54.2 | 19.2 | 9.7 | 516.2 | 606.9 |
| Maximum CSF pressure in CA under BC “C” (Pa) | 481.2 | 502.4 | 508.3 | 494.1 | 453.1 | 481.3 | 503.2 | 449.4 | 484.1 | 22.6 | 8.0 | 4.7 | 465.3 | 503.0 |
| Volume of ventricular system (ml) | 20.1 | 20.9 | 21.8 | 19.89 | 20.1 | 19.6 | 20.9 | 19.5 | 20.3 | 0.8 | 0.3 | 3.9 | 19.7 | 21.0 |
| Volume of brain tissue (ml) | 1275.1 | 1343.2 | 1369.1 | 1338.1 | 1305.5 | 1259.2 | 1210.3 | 1275.1 | 1297.0 | 52.1 | 18.4 | 4.0 | 1253.4 | 1340.5 |
| Volume of SAS (ml) | 100.5 | 109.4 | 111.1 | 105.8 | 101.9 | 113.1 | 103.5 | 101.5 | 105.9 | 4.8 | 1.7 | 4.5 | 101.8 | 109.9 |
BC boundary condition, CSF cerebrospinal fluid, CA cerebral aqueduct, SAS subarachnoid space.