发明名称 |
Method and apparatus for measuring scattering property and absorption property in scattering medium |
摘要 |
Measuring scattering and absorption properties of a scattering medium according to the following: (a) causing pulsed measuring light having a predetermined wavelength to enter the scattering medium; (b) performing time-resolved measurement of the measuring light having diffusively propagated in the scattering medium at light detection positions corresponding to a plurality of combinations, each comprising a light incidence position on the scattering medium in the first step and a light detection position on the scattering medium where the measuring light entered the scattering medium in the first step and a light detection position on the scattering medium where the measuring light is detected, having different incidence-detection distances between the light incidence position and the light detection position; (c) calculating a plurality of mean optical pathlengths of the measuring light corresponding to the plurality of incidence-detection distances, based on results of the time-resolved measurement measured in the second step; and (d) calculating a scattering coefficient and an absorption coefficient in the scattering medium, based on a plurality of simultaneous relations consisting of calculation values of the plurality of mean optical pathlengths corresponding to the incidence-detection distances, calculated in the third step, and a theoretical equation of the mean optical pathlengths derived in correspondence to light diffusion properties comprising a scattering property and an absorption property in diffusive propagation paths in the scattering medium.
|
申请公布号 |
US5676142(A) |
申请公布日期 |
1997.10.14 |
申请号 |
US19950551746 |
申请日期 |
1995.11.07 |
申请人 |
HAMAMATSU PHOTONICS K.K. |
发明人 |
MIWA, MITSUHARU;TSUCHIYA, YUTAKA;UEDA, YUKIO |
分类号 |
G01N21/27;A61B5/00;A61B5/145;A61B5/1455;A61B10/00;G01N21/49;(IPC1-7):A61B5/00 |
主分类号 |
G01N21/27 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|