Figure 6: Graph depicting mM concentrations of chromophores (Y axis) versus time (x axis) as recorded by NIRS during endovascular thrombolysis of the cerebral venous system. Urokinase infusion was initiated at 17:48, at the torcula and superior sagittal sinus with successful re-establishment of flow in the left transverse sinus, torcula, and superior sagittal sinus. Venography revealed poor flow in the straight sinus and again at the torcula. At 19:19, urokinase was re-infused in the straight sinus and then torcula to again establish venous patency. Varying concentrations of cytochrome oxidase (Cytox), oxyhemoglobin (HbO2), deoxyhemoglobin (Hb) and total hemoglobin (THb) paralleled establishment of venous sinus patency.

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