Method for detection of pathogenic microorganisms

• US 6,917,423 B2
• Filed: 04/14/2004
• Issued: 07/12/2005
• Est. Priority Date: 01/10/2002
• Status: Active Grant

• Current Assignee: Chemimage Corporation
• Original Assignee: Chemimage Corporation
• Inventors: Nelson, Matthew P., Treado, Patrick J., Schweitzer, Robert C., Vanni, G. Steven, Gardner, Charles W. Jr., Maier, John S., Wolfe, Juliane
• Primary Examiner(s): EVANS, FANNIE L
• Application Number:
  US10/823,902
• Publication Number:
  US 20040189989A1
• Time in Patent Office: 454 Days
• Field of Search: 356/301
• US Class Current: 356/301
• CPC Class Codes: G01J 3/02 Details
• CPC Class Codes: G01J 3/0218 using optical fibers
• CPC Class Codes: G01J 3/2823 Imaging spectrometer
• CPC Class Codes: G01J 3/44 Raman spectrometry; Scattering spectrometry ; Fluorescence spectrometry
• CPC Class Codes: G01N 2021/1736 with two or more light sources
• CPC Class Codes: G01N 2021/6421 Measuring at two or more wavelengths
• CPC Class Codes: G01N 2021/6423 Spectral mapping, video display
• CPC Class Codes: G01N 2021/656 Raman microprobe
• CPC Class Codes: G01N 21/31 Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry G01N21/72 takes precedence
• CPC Class Codes: G01N 21/33 using ultraviolet light G01N21/39 takes precedence
• CPC Class Codes: G01N 21/359 using near infrared light
• CPC Class Codes: G01N 21/645 Specially adapted constructive features of fluorimeters
• CPC Class Codes: G01N 21/6456 Spatial resolved fluorescence measurements; Imaging
• CPC Class Codes: G01N 21/6458 Fluorescence microscopy fluorescence microscopes per se G02B21/0076 and G02B21/16
• CPC Class Codes: G01N 21/6486 Measuring fluorescence of biological material, e.g. DNA, RNA, cells G01N21/6428 takes precedence
• CPC Class Codes: G01N 21/65 Raman scattering

Abstract

Pathogenic microorganisms are detected and classified by spectral imaging of the Raman light scattered by the organisms.

Claims

1. A method for forming an image of an organic object comprising:

a) illuminating said object with light in the absence of a bioconcentrator which is capable of forming a complex between an analyte and a biological;

b) forming an image of said organic object using Raman shifted light from said object;

c) analyzing said Raman shifted light image for patterns characteristic of said organic object.

2. A method for forming an image of an object according to claim 1 further comprising passing said Raman shifted light through a filter selected from the group consisting of a FAST fiber array spectral translator, a Fabry Perot angle tuned filter, an acousto-optic tunable filter, a liquid crystal tunable filter, a Lyot filter, and an Evan'"'"'s split element liquid crystal tunable filter.

3. A method for forming an image of an object according to claim 1 further comprising passing said Raman shifted light through an interferometer selected from the group consisting of a polarization-independent imaging interferometer, a Michelson interferometer, a Sagnac interferometer, a Twynam-Green Interferometer, and a Mach-Zehnder Interferometer.

4. A method for forming an image of an object according to claim 1 further comprising dispersing said Raman shifted light thereby providing spatially separated Raman spectra.

5. A method for forming an image of an object according to claim 1 further comprising providing spatially separated Raman spectra.

6. A method for forming an image of an object according to claim 1 further comprising gathering information from said first image and forming a second image using said information.

7. A method for forming an image of an object according to claim 6 wherein said information comprises a location of said object.

8. A method for forming an image of an object according to claim 6 wherein said information comprises a characterization of said object.

9. A method for forming an image of an object according to claim 1 further comprising forming an image of at least one anthrax spore.

10. A method for forming an image of an object according to claim 1 further comprising forming an image of an object selected from the group consisting of filoviruses, naviruses, alphaviruses.

11. A method for forming an image of an object according to claim 1 further comprising forming an image of an object selected from the group of microorganisms consisting of protozoa, cryptosporidia microorganisms, Escherichia coli, Escherichia coli 157 microorganisms, Plague (Yersinia pestis), Smallpox (variola major), Tularemia (Francisella tularensis), Brucellosis (Brucella species), Clostridium perfringens, Salmonella, Shigella, Glanders (Burkholderia mallei), Melioidosis (Burkholderia pseudomallei), Psittacosis (Chlamydia psittaci), Q fever (Coxiella burnetil), Typhus fever (Rickettsia prowazekii), and Vibrio cholerae.

12. A method for forming an image of an object according to claim 1 further comprising forming an image of an object selected from the group of consisting of Giardia, Candida albicans, Enterococcus faecalis, Staphylococcus epidermidis, Staphylococcus aureus, Enterobacter aerogenes, Corynebacterium diphtheriae, Pseudomonas eruginosa, Acinetobacter calcoaceticus, Klebsiella pneumoniae, and Serratia marcescens.

13. A method for forming an image of one of a plurality of organic objects comprising:

a) providing said plurality of organic objects in a bio-dilute sample;

b) illuminating said sample with light in the absence of a bioconcentrator which is capable of forming a complex between an analyte and a biological;

c) forming an image of one of said plurality of organic objects using Raman shifted light from said imaged organic object;

d) analyzing said Raman shifted light image for patterns characteristic of said organic object.

14. A method for forming an image of an object according to claim 13 further comprising passing said Raman shifted light through a filter selected from the group consisting of a FAST fiber array spectral translator, a Fabry Perot angle tuned filter, an acousto-optic tunable filter, a liquid crystal tunable filter, a Lyot filter, and an Evan'"'"'s split element liquid crystal tunable filter.

15. A method for forming an image of an object according to claim 13 further comprising passing said Raman shifted light through an interferometer selected from the group consisting of a polarization-independent imaging interferometer, a Michelson interferometer, a Sagnac interferometer, a Twynam-Green Interferometer, and a Mach-Zehnder Interferometer.

16. A method for forming an image of an object according to claim 13 further comprising dispersing said Raman shifted light thereby providing spatially separated Raman spectra.

17. A method for forming an image of an object according to claim 13 further comprising providing spatially separated Raman spectra.

18. A method for forming an image of an object according to claim 13 further comprising gathering information from said first image and forming a second image using said information.

19. A method for forming an image of an object according to claim 18 wherein said information comprises a location of said object.

20. A method for forming an image of an object according to claim 18 wherein said information comprises a characterization of said object.

21. A method for forming an image of an object according to claim 13 further comprising forming an image of at least one anthrax spore.

22. A method for forming an image of an object according to claim 13 further comprising forming an image of an object selected from the group consisting of filoviruses, naviruses, alphaviruses.

23. A method for forming an image of an object according to claim 13 further comprising forming an image of an object selected from the group of microorganisms consisting of protozoa, cryptosporidia microorganisms, Escherichia coli, Escherichia coli 157 microorganisms, Plague (Yersinia pestis), Smallpox (variola major), Tularemia (Francisella tularensis), Brucellosis (Brucella species), Clostridium perfringens, Salmonella, Shigella, Glanders (Burkholderia mallei), Melioidosis (Burkholderia pseudomallei), Psittacosis (Chlamydia psittaci), Q fever (Coxiella burnetii), Typhus fever (Rickettsia prowazekii), and Vibrio cholerae.

24. A method for forming an image of an object according to claim 13 further comprising forming an image of an object selected from the group of consisting of Giardia, Candida albicans, Enterococcus faecalis, Staphylococcus epidermidis, Staphylococcus aureus, Enterobacter aerogenes, Corynebacterium diphtheriae, Pseudomonas eruginosa, Acinetobacter calcoaceticus, Klebsiella pneumoniae, and Serratia marcescens.

25. A method for forming an image of one of a plurality of pathogenic microorganisms comprising:

a) providing a bio-dilute sample of said plurality of pathogenic microorganisms;

b) illuminating said bio-dilute sample with light in the absence of a bioconcentrator which is capable of forming a complex between an analyte and a biological;

c) forming an image of one of said plurality of pathogenic microorganisms using Raman shifted light from said imaged pathogenic microorganism;

d) analyzing said Raman shifted light image for patterns characteristic of said one of said plurality of pathogenic microorganisms.

26. A method for forming an image of an organic object comprising:

a) illuminating a biodilute sample including said organic object with light in the absence of a bioconcentrator which is capable of forming a complex between an analyte and a biological;

b) forming an image of said illuminated organic object using Raman shifted light from said object;

c) analyzing said Raman shifted light image for patterns characteristic of said organic object.