NIRS Monitoring During Intracranial Interventions

Near infrared spectroscopy is a valuable tool to monitor cerebral oxygenation during intracranial interventions. However, it yields artificial results when the dye indocyanine green (ICG) is applied, which is routinely done for intraoperative angiography.

The investigators examine, to what extent and which duration NIRS is disturbed following ICG application.

Inclusion Criteria:

• patients scheduled for aneurysm clipping or av-malformation removal

Exclusion Criteria:

• pregnancy