A probe, conventionally used for intracranial pressure (ICP) monitoring, has been extended with optical fibres and a light detector.
The NIRS signal obtained with patches fixed on the skin is contaminated from extra cerebral tissues (skin, skull, cerebrospinal fluid layer). To obtain measurement values directly from inside the brain tissue a conventional probe for ICP monitoring is supplied with optical fibres to measure CBF and oxygen metabolism.
Conventional NIRS, with light-emitters and light-detectors attached on the skin, has been extended with a light absorbing dye dilution mode applying indocyanine green (ICG) for CBF monitoring.
NeMoDevices' new NeuroMonitoring systems are based on optical spectroscopy & imaging. The method is based on near infrared spectroscopy (NIRS). NIRS is based upon the principle that light in the near infrared region penetrates biological tissue and is absorbed differently by the blood containing deoxygenated and oxygenated haemoglobin.
