In this situation blood outflow system of Brain(DURAL SINUSES) is clogged by blood clots.With Interventional Neuroradiological Techniques ,Without opening the Skull ; these Blood CLOTS can be dissolved and normal blood overflow from brain will be restored.
Example- 65 Yrs. old gentleman presented with multiple episodes of fits and loss of Consciousness. After Dissolutiuon of blood clot from Major Brain Venous System (DURAL SINUSES), he recovered completely.