Method and a system for determination of particles in a liquid sample
First Claim
1. A method for the assessment of at least one quantity parameter and/or at least one quality parameter of biological particles in a liquid analyte material, comprisingproviding a volume of between 0.01 μ
- l and 20 μ
l of a liquid sample comprising the liquid analyte material,exposing, onto an array of active detection elements, an at least one-dimensional spatial image of said volume, the image being one which is detectable as an intensity by individual active detection elements, under conditions which will permit processing of the intensities detected by the array of detection elements during the exposure in such a manner that images of electromagnetic signals from the biological particles are identified as distinct from images of electromagnetic signals from background signals, and wherein the spatial image exposed onto the array of active detection elements is subject to such a linear enlargement that the ratio of the image of a linear dimension on the array of detection elements to the original linear dimension in the exposing domain is smaller than 10;
1,the sample being at stand still daring the exposure,processing the intensities detected by the detection elements in such a manner that signals from the biological particles are identified as distinct from background signals,and correlating the results of the processing to the at least one quantity parameter and/or the at least one quality parameter of the liquid analyte material.
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Abstract
The present invention relates to a method for the assessment of quantity and quality parameters of biological particles in a liquid analyte material. The method comprises applying a volume of a liquid sample to an exposing domain from which exposing domain electromagnetic signals from the sample in the domain can pass to the exterior, and exposing, onto an array of active detection elements such as CCD-elements, a spatial representation of electromagnetic signals having passed from the domain, the representation being detectable as an intensity by individual active detection elements, under conditions permitting processing of the intensities detected by the array of detection elements during the exposure in such a manner that representations of electromagnetic signals from the biological particles are identified as distinct from representations of electromagnetic signals from background signals. The size of the volume of the liquid sample is sufficiently large to permit the assessment of the quantity and quality parameters to fulfill a predetermined requirement to the statistical quality of the assessment based on substantially one exposure.
86 Citations
48 Claims
-
1. A method for the assessment of at least one quantity parameter and/or at least one quality parameter of biological particles in a liquid analyte material, comprising
providing a volume of between 0.01 μ - l and 20 μ
l of a liquid sample comprising the liquid analyte material,exposing, onto an array of active detection elements, an at least one-dimensional spatial image of said volume, the image being one which is detectable as an intensity by individual active detection elements, under conditions which will permit processing of the intensities detected by the array of detection elements during the exposure in such a manner that images of electromagnetic signals from the biological particles are identified as distinct from images of electromagnetic signals from background signals, and wherein the spatial image exposed onto the array of active detection elements is subject to such a linear enlargement that the ratio of the image of a linear dimension on the array of detection elements to the original linear dimension in the exposing domain is smaller than 10;
1,the sample being at stand still daring the exposure, processing the intensities detected by the detection elements in such a manner that signals from the biological particles are identified as distinct from background signals, and correlating the results of the processing to the at least one quantity parameter and/or the at least one quality parameter of the liquid analyte material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
- l and 20 μ
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28. A system for the assessment of at least one quantity parameter and/or at least one quality parameter of biological particles in a liquid analyte material, comprising
a sample compartment defining a volume of between 0.01 μ - l and 20 μ
l of a liquid sample,an array of active detection elements, onto witch an at lease one-dimensional spatial image of said volume is exposed, the image being one which is detectable as an intensity by individual active detection elements, under conditions which will permit processing of the intensities detected by the array of detection elements during the exposure in such a manner that images of electromagnetic signals from the biological particles are identified as distinct from images of electromagnetic signals from background signals, a lens consisting of one or several elements for focusing an image of electromagnetic signals from at least part of the exposing domain onto the array of detection elements such tat the ratio of the image of a linear dimension on the array of detection elements to the original linear dimension in the exposing domain is smaller than 10;
1,the system being adapted to keep the sample in the sample compartment at stand still dining the exposure, a computer unit for processing the intensities detected by the detection elements in such a manner that signals from the biological particles are identified as distinct from background signals, and for correlating the results of the processing to the at least one quantity parameter and/or the at least one quality parameter of the liquid analyte material. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
- l and 20 μ
Specification