Non-invasive ONSD-based Neuromonitoring in a Neurointensive Care Setting

During the intensive care stay, patients with implemented invasive intracranial pressure monitoring will have sonographic recording of the optic nerve sheath (video clip) with a parallel recording of the underlying ICP. The obtained image material is then i) analyzed by a machine-learning algorithm and ii) manually by 2 blinded differently experienced examiners (expert, novice) with respect to the ONSD. For the manual procedure, three individual measurements are made for each eye and the mean value is determined. Subsequently, the measured values of the two examiners and the automated procedure are correlated with the ICP recorded during the sonographic examination.