| 摘要 |
<p>It is intended to provide an apparatus for evaluating a biological function which achieves a high speed and a high accuracy compensating for the low spatial resolution of the existing near infrared spectroscopy and can not only monitor changes in oxygen concentration but also conveniently discriminate capillary vascular reactions and metabolic reactions, in the case of differentiating information obtained from capillary blood vessels reflecting the metabolism of a tissue from external information obtained from the outside of the tissue (for example, arteries and veins) as far as possible. This apparatus is characterized by having a light-irradiation means of irradiating a definite position of a living body with light, a light-detection means of detecting light output from the body, a calculation means of determining changes in oxidized hemoglobin concentration and reduced hemoglobin concentration by near infrared spectroscopoic calculation using the detected light intensity as a parameter, and an indication means of indicating the information concerning the relative ratio [k] of both data with the passage of time.</p> |
