发明名称 |
Broadband absorption spectroscopy in turbid media by combined frequency-domain and steady state methodologies |
摘要 |
A technique for measuring broadband near-infrared absorption spectra of turbid media that uses a combination of frequency-domain and steady-state reflectance methods. Most of the wavelength coverage is provided by a white-light steady-state measurement, whereas the frequency-domain data are acquired at a few selected wavelengths. Coefficients of absorption and reduced scattering derived from the frequency-domain data are used to calibrate the intensity of the steady-state measurements and to determine the reduced scattering coefficient at all wavelengths in the spectral window of interest. The absorption coefficient spectrum is determined by comparing the steady-state reflectance values with the predictions of diffusion theory, wavelength by wavelength. Absorption spectra of a turbid phantom and of human breast tissue in vivo, derived with the combined frequency-domain and steady-state technique, agree well with expected reference values.
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申请公布号 |
US2003023172(A1) |
申请公布日期 |
2003.01.30 |
申请号 |
US20020191693 |
申请日期 |
2002.07.09 |
申请人 |
TROMBERG BRUCE J.;BERGER ANDREW J.;CERUSSI ALBERT E.;BEVILACQUA FREDERIC;JAKUBOWSKI DOROTA |
发明人 |
TROMBERG BRUCE J.;BERGER ANDREW J.;CERUSSI ALBERT E.;BEVILACQUA FREDERIC;JAKUBOWSKI DOROTA |
分类号 |
A61B5/00;(IPC1-7):A61B6/00 |
主分类号 |
A61B5/00 |
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