Introduction Near infrared spectroscopy (NIRS) is an upcoming method to asses information concerning local hemodynamics for neurological clinical diagnostics. Until now most commercially available NIRS instruments are relatively big, heavy and inflexible in application, which is mainly due to the use of glass fibers for light transfer and photomultipliers for photon detection. Objective Creation of a portable, wireless, ultra compact, battery operated continuous wave (CW) NIRS system for continuous hemodynamic monitoring.

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