Intraoperative measurements take the guesswork out of blood flow assessment during aneurysm clipping, extracranial to intracranial (EC-IC) bypass surgeries, arteriovenous malformations (AVMs), dural fistula obliteration, and tumor resection surgeries.
During aneurysm clipping surgery, flow measurements help surgeons achieve optimal clip placement to obliterate the aneurysm without compromising flow in parent vessels and distal branches. Measurements either confirm the surgeon’s clinical assessment of flow preservation or expose the need for immediate correction of flow deficits. During temporary clippings, flow measurements offer an assessment of collateral flow reserve and predict the safety of the temporary clipping.
During EC-IC bypass surgery to preserve or augment distal cerebral perfusion, flow measurements aid the surgeon in choosing the most appropriate bypass and predicting its future patency. Intraoperative blood flow measurements thus provide invaluable quantitative flow information for a surgeon to: