Article Figures & Data
Figures
- Fig 1.
Arterial and SSS waveforms in a healthy subject. mls indicates milliliters.
- Fig 2.
Arterial and SSS waveforms in a patient with SIH. Note the flat venous flow. mls indicates milliliters.
- Fig 3.
Focal thrombus.
A, MR venogram (30/5/1 [TR/TE/NEX]) shows acute thrombosis of the transverse sinus. Arrow indicates area of signal intensity loss.
B, Sagittal reconstruction shows nonocclusive thrombus (arrow) just distal to the vein of Labbé.
- Fig 4.
Oblique view of the venous phase of cerebral angiography shows bilateral transverse sinus stenoses (arrows).
- Fig 5.
Patient with IIH.
A, MR venogram (30/5/1 [TR/TE/NEX]) shows a dilated ophthalmic vein (thin arrow) leading to distended facial veins (thick arrow).
B, MR venogram (30/5/1) shows distended veins of the right side of the neck.
Tables
Blood flow and pulsatility
Group Volume (mL/min) Pulsatility Index SSS Straight Sinus Total Arterial SSS Straight Sinus Control (n = 12) 400 (65) 117 (35) 855 (150) 0.72 (0.16) 0.41 (0.11) 0.50 (0.15) IIH (n = 5) 467 (94) 162 (50) 1248 (147) 0.58 (0.16) 0.25 (0.02) 0.35 (0.05) SIH (n = 7) 300 (49) 113 (51) 853 (77) 0.72 (0.37) 0.23 (0.05) 0.34 (0.10) ANOVA P Value* .001 .012 <.001 .507 <.001 .019 Note.—Data are the mean. Numbers in parentheses are standard deviations.
* ANOVA indicates analysis of variance.
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