We tested the hypothesis that transcranial oximetry by fast scanning near infrared spectroscopy can detect local desaturation of hemoglobin in arterial vessels of cerebral circulation with impaired blood supply. A total of 74 near infrared …

Interrogation of tissue with light offers the potential for noninvasive chemical measurement, and penetration with near-infrared wavelengths (750-1000 nm) is greater than with visible light. Specific absorption by clinically relevant compounds such …