The change of the concentrations of Hb (deoxygenated hemoglobin),HbO 2(oxygenated hemoglobin) in tissue can be qua ntitatively determined by the record of near infrared absorption spectroscopy o f hemoglobin under different physiology status.

• 利用血红蛋白在不同氧合状态下对近红外光具有的不同吸收谱这一特性 ,可以对人体组织中氧合血红蛋白 ,还原血红蛋白 ,细胞色素氧化酶等浓度的变化进行定量检测。