Device for analyzing fluorescent light signals
AssigneesAgency of Industrial Science and Technology, Ministry of International Trade & Industry
InventorsSusumu Suzuki, Kazuyuki Ishida, Takeo Ozaki
Life of this patent
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Abstract
A device for analyzing fluorescent light signals consists of memory means for storing as a reference spectrum a spectrum obtained under predetermined conditions, and extraction means for extracting a predetermined component spectrum based on the results of a conversion of the reference spectrum using a specific wavelength of a measured spectrum obtained during actual measurement and a specific wavelength of the reference spectrum. The arrangement of the invention allows the spectrum of a specific component to be extracted accurately from measured spectra.
Claims3
A device for analyzing fluorescent light signals, comprising:
- first light-irradiating means for irradiating a normal position of an organism with first laser light;
- first light-detecting means for detecting a first spectrum of fluorescence excited by the irradiation of said first laser light;
- memory means for storing, as a reference spectrum, the first spectrum of fluorescence detected by said first light-detecting means;
- second light-irradiating means for irradiating with second laser light a position to be diagnosed of the organism injected with a fluorescent substance having a strong affinity for tumors;
- second light-detecting means for detecting a second spectrum of fluorescence excited by the irradiation of said second laser light;
- correction means for correcting said reference spectrum on the basis of a ratio of an intensity of a specific wavelength in the second spectrum detected by said second light-detecting means to an intensity of the same wavelength as said specific wavelength in said reference spectrum;
- and
- extraction means for subtracting the corrected reference spectrum from the detected second spectrum and extracting the difference.
A device for analyzing fluorescent light signals, comprising:
- light-irradiating means for irradiating with a laser a normal position of an organism and a position to be diagnosed of said organism injected with a fluorescent substance having a strong affinity for tumors;
- light-detecting means for detecting a first spectrum of fluorescence excited by irradiation of said normal position by said light-irradiating means and a second spectrum of fluorescence excited by irradiation of said diagnosed position by said light-irradiating means;
- first memory means for storing said first spectrum, said first spectrum being used as a reference spectrum;
- second memory means for storing an intensity at a wavelength in said first spectrum and for storing an intensity of said wavelength in said second spectrum;
- correction means for correcting said reference spectrum by multiplying said reference spectrum by a ratio of said intensity at said wavelength in said first spectrum to said intensity at said second wavelength in said spectrum;
- and
- extraction means for subtracting said corrected reference spectrum from said second spectrum and for outputting the difference.
Dependencies are inferred from the claim text.