Title :
A new system for noninvasive measurement of cerebral regional oxygen supply
Author :
Nakagawa, Emiko ; Mminamitani, Haruyuki ; Ochiai, Ryouichi ; Yamamura, Haruo
Author_Institution :
Fac. of Sci. & Technol., Keio Univ., Yokohama, Japan
fDate :
31 Oct-3 Nov 1996
Abstract :
A new measuring system (TOS96), based on near infrared spectroscopy, is presented for noninvasive evaluation of the cerebral regional oxygen saturation (rSO2) and volume of hemoglobin (HbI). To measure more simply, a reflectance sensor that consists of one photodiode (PD) and light emitting diodes (LEDs) with three wavelengths was designed. This paper suggests an experimental method of calculation from in vitro models, and quantitates oxygenation state with rSO2 and HbI. The results of clinical application of this system show the availability as a monitor of cerebral regional oxygenation state
Keywords :
biomedical equipment; biomedical measurement; blood; brain; infrared spectroscopy; patient monitoring; brain monitor; cerebral regional oxygen supply; clinical application; in vitro models; light emitting diodes; near infrared spectroscopy; noninvasive measurement system; oxygenation state; photodiode; reflectance sensor; three wavelengths; volume of hemoglobin; Blood; In vitro; Infrared detectors; Infrared spectra; Light emitting diodes; Monitoring; Noninvasive treatment; Oxygen; Volume measurement; Wavelength measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.656912
