| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To raise the likelihood of information on matter of interest because information on the matter of interest is acquired after eliminating a contribution part to reflection spectra by the photoabsorption of matter of non-interest. <P>SOLUTION: A wavelength variable element 68 variable in wavelength band of transmitted light is used to irradiate an observed site of a subject with a plurality of light different in wavelength band. Reflected light from the observed site is imaged by a CCD 35, and a reflection spectrum computing section 80 computes the reflection spectra based on imaging signals output from the CCD 35. A multiple regression analysis section 81 makes a multiple regression analysis of the reflection spectra S and absorption spectra (an) of the matter of interest such as blood and hemoglobin and the matter of non-interest such as bile and staining matter. An eliminating section 83 eliminates spectral components of matter of non-interest obtained by the multiple regression analysis, from the reflection spectra S. A blood vessel information acquiring section 84 acquires blood vessel information such as oxygen saturation and blood vessel depth based on the reflection spectra S' from which the spectral components of the matter of non-interest are eliminated. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
