Intraoperative Cerebral Measurements Using Implantable Cortical Multimodality Probe
Autor: | Shun Sakai, Tadashi Sakata, Takao Inoue, Yuichi Ueda, Yuya Ishihara, Toshitaka Yamakawa, Michiyasu Suzuki |
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Rok vydání: | 2020 |
Předmět: |
Materials science
0206 medical engineering 02 engineering and technology Brain surface Temperature measurement Multimodal Imaging Total thickness law.invention 03 medical and health sciences 0302 clinical medicine law Humans Polarity reversal Spectroscopy Near-Infrared Thermistor Hemodynamics Brain Electroencephalography 020601 biomedical engineering Photodiode Oxygen Cerebral hemodynamics Cerebrovascular Circulation Electrode 030217 neurology & neurosurgery Biomedical engineering |
Zdroj: | EMBC |
ISSN: | 2694-0604 |
Popis: | In this study, a multimodality probe that simultaneously measures electroencephalograms, cerebral hemodynamics, and brain surface temperature was developed. This probe has six channels, and each channel has a platinum electrode for cortical electroencephalogram measurements, light emitting diodes, and photodiodes for hemodynamic measurements using near-infrared spectroscopy (NIRS), and a thermistor for measuring the cerebral surface temperature (BrT). A probe with a width of 8.0 mm and maximum total thickness of 0.7 mm was fabricated using flexible printed circuit board technology for chronic intracranial placement. Brain activity using the prototype probe at the resected site was measured and its function performance was evaluated. Characteristic epileptogenic abnormal electroencephalograms accompanied by polarity reversal between channels occurred at 16 min and 38 s. It was concluded that the brain cells consumed oxygen during the occurrence of abnormal electroencephalograms. At this time, no noticeable change in HbT values could be confirmed. |
Databáze: | OpenAIRE |
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