公开(公告)号：EP0956495A1

公开(公告)日：1999-11-17

申请号：EP98902110.0

申请日：1998-01-30

申请人： UNIVERSITY COLLEGE LONDON

发明人： KOHL, Matthias ,  WATSON, Russell ,  COPE, Mark

IPC分类号： G01N21 ,  A61B5

CPC分类号： G01N21/314

摘要： A method of determining the ratio of the absolute absorption coefficients νa(μ2) and νa(μ1) of a light scattering medium at two different wavelengths comprising: a) passing light (as herein defined) through the medium; b) measuring a characteristic X of the light at two wavelengths μ1 and μ2 which is affected by the absorption coefficient during its passage through the medium; c) effecting changes Δνa(μ1) and Δνa(μ2) in the absorption coefficients at the two wavelengths; d) repeating step (b); e) determining the ratio of the absolute absorption coefficients νa(μ1) and νa(μ2) at said two wavelengths from the said changes therein Δνa(μ1) and Δνa(μ2) or from quantities representative thereof, from the characteristic X, and from the ratio of transport scattering coefficients of the medium νs'(μ1) and νs'(μ2) at the two wavelengths.

摘要翻译： 一种确定两种不同波长的光散射介质的绝对吸收系数νa（μ2）和νa（μ1）之比的方法，包括：a）使光（如本文所定义的）通过介质; b）测量在通过介质期间受吸收系数影响的两个波长μ1和μ2处的光的特性X; c）在两个波​​长处的吸收系数中改变Δνa（μ1）和Δνa（μ2）; d）重复步骤（b）; e）根据其中的所述变化Δνa（μ1）和Δνa（μ2）或由其代表量确定所述两个波长处的绝对吸收系数νa（μ1）和νa（μ2）的比率，从特性X和 在两个波长处介质νs'（μ1）和νs'（μ2）的传输散射系数的比率。