Intraoperative Detection of Early Microvasospasm in Patients with Subarachnoid Hemorrhage by Using Orthogonal Polarization Spectral Imaging

Abstract

Orthogonal polarization spectral imaging is a suitable method to study cerebral microcirculation during surgery. In patients with SAH, capillary density is significantly decreased and small arteries and arterioles of the cortical surface exhibit vasospasm that cannot be detected by angiography or transcranial Doppler sonography. These changes may contribute to the initial clinical symptoms and may have an influence on the clinical postoperative course.