发明名称 |
Quantitative analyses of biological tissue using phase modulation spectroscopy |
摘要 |
A spectroscopic system for quantifying in vivo concentration of an absorptive pigment in biological tissue includes an oscillator for generating a first carrier waveform of a first frequency on the order of 108 Hz, a light source for generating light of a selected wavelengths modulated by the carrier waveform, and a detector for detecting radiation that has migrated over photon migration paths in the tissue from an input port to a detection port spaced several centimeters apart. The wavelength is sensitive to concentration of an absorptive pigment present in the tissue. A phase detector compares the detected radiation with the introduced radiation and determines therefrom the phase shift of the detected radiation. A processor quantifies the concentration of the absorptive pigment by calculating a value of the absorption coefficient.
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申请公布号 |
US6263221(B1) |
申请公布日期 |
2001.07.17 |
申请号 |
US19970799206 |
申请日期 |
1997.02.13 |
申请人 |
NON-INVASIVE TECHNOLOGY |
发明人 |
CHANCE BRITTON;NTZIACHRISTOS VASILIS |
分类号 |
A61B5/00;G01N21/31;G01N21/47;G01N21/49;G01N21/64;(IPC1-7):A61B5/00 |
主分类号 |
A61B5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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