| Vol. 3, Issue 1, Article 3 |
|
Mironov |
CT image (Fig 1) shows a discrete subarachnoid hemorrhage in interhemispheric space (arrow).
MR images (Figs 3,4) point at an occlusion of superior sagittal sinus (arrows), and Diffusion weighted imaging (Fig 2) points at small cortical and frontal area on the left with acute ischemic brain lesion (arrow).
Sequenced phlebograms of right (Figs 5,6) and left (Figs 7,8) internal carotid arteries show the delayed venous circulation in the both fronto-parietal areas.
The late venous phase on the right (Fig 6) shows features of collateral drainage (arrow); the venous drainage is damaged, but not totally decompensated.
The late venous phase and on the left (Fig 8) is functionally more damaged; there is persistent absence of collateral drainage with permanent venous stasis (arrow).
The poor venous collateral's on the left side correlate to the higher grade of venous drainage disturbance with consequent ischemic parenchymal damage on diffusion weighted imaging (Fig 2).
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