Method and apparatus for measuring immunological reaction with the aid of fluctuation in intensity of scattered light
First Claim
1. An automatic analyzer for measuring antigen-antibody reaction comprisingmeans for feeding a plurality of cells along a given reaction line;
- sample delivery means for delivering given amounts of samples to be measured into successive cells;
reagent delivery means for delivering given amounts of a reagent into successive cells;
means for projecting a light beam into successive cells;
means for detecting light scattered by particles included in a reaction liquid contained in a cell to generate a photoelectric signal; and
means for receiving the photoelectric signal and measuring the antigen-antibody reaction in accordance with a power spectrum density of fluctuation in intensity of the scattered light.
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Abstract
A coherent laser light flux is projected into a cell made of transparent quartz and light scattered from particles suspended in an antigen-antibody reaction liquid contained in the cell is detected by a photomultiplier by means of a collimator. An output electrical signal from the photomultiplier is sampled at different time instances and samplings are supplied to a fast Fourier transformer to derive a plurality of power spectrum desnities of fluctuation in intensity of the scattered light. A plurality of power spectrum densities are averaged to generate a mean power spectrum density. An amount of antigen contained in the reaction liquid is measured in accordance with the mean power spectrum density.
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Citations
15 Claims
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1. An automatic analyzer for measuring antigen-antibody reaction comprising
means for feeding a plurality of cells along a given reaction line; -
sample delivery means for delivering given amounts of samples to be measured into successive cells; reagent delivery means for delivering given amounts of a reagent into successive cells; means for projecting a light beam into successive cells; means for detecting light scattered by particles included in a reaction liquid contained in a cell to generate a photoelectric signal; and means for receiving the photoelectric signal and measuring the antigen-antibody reaction in accordance with a power spectrum density of fluctuation in intensity of the scattered light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification