Abstract
Abstract Investigation of rapid near-infrared (NIR) spectroscopy in combination with the fibre optics for biomedical sensing is presented. Modern diode-array technology enables sensitive measurement of changes in tissue absorbance caused by blood pulsation. In order to describe the dynamics of this system a multi-layer model based on pulse wave theory is used. The evaluation of the pulsatile part of tissue absorbance at different wavelengths allows the construction of both pulsatile and static tissue spectra. The absorption monitoring of an injected bolus of indocyanine green is presented of non-invasive measurement of an arterial blood spectrum.
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