Diagnostic scanning microscope for information-enriched qualitative histopathology

• US 7,885,448 B2
• Filed: 02/27/2007
• Issued: 02/08/2011
• Est. Priority Date: 03/19/2001
• Status: Expired due to Fees

• Current Assignee: DMetrix, Inc.
• Original Assignee: DMetrix, Inc.
• Inventors: Bartels, Peter H.
• Primary Examiner(s): Tabatabai; Abolfazl
• Application Number:
  US11/711,284
• Publication Number:
  US 20070177786A1
• Time in Patent Office: 1,442 Days
• Field of Search: 382/128, 382/129, 382/130, 382/131, 382/132, 382/133, 382/134, 382/162, 382/170, 600/411, 600/427, 378/43, 250/309, 250/311, 250/201.1, 128/902, 128/905, 436/63, 436/74, 436/164, 436/174, 436/519, 977/869, 977/881
• US Class Current: 382/133
• CPC Class Codes: G02B 21/002 Scanning microscopes scanning near field optical microscopes G01Q60/18
• CPC Class Codes: G02B 21/365 Control or image processing arrangements for digital or video microscopes G02B21/361, G02B21/362 take precedence
• CPC Class Codes: G06V 20/69 Microscopic objects, e.g. biological cells or cellular parts

Abstract

A microscope array with staggered rows of magnifying imaging systems is used to scan a biological tissue sample in a single linear pass to produce an image and corresponding optical-density data. A conventional computerized algorithm is used to identify, isolate and produce segmented images of nuclei contained in the image. The OD values corresponding to nuclear chromatin are used to identify numerical patterns known to have statistical significance in relation to the health condition of the biological tissue. These patterns are analyzed to detect pre-neoplastic changes in histologically normal-appearing tissue that suggest a risk for the development of a pre-malignant and a potentially malignant lesion. This information is then converted to a visually perceptible form incorporated into the image of the tissue sample and is displayed for qualitative analysis by a pathologist.

Claims

1. A method of imaging a biological sample with a microscopic imaging system, comprising the following steps:

providing a two-dimensional microscope array with a plurality of magnifying imaging systems disposed along a corresponding plurality of optical axes for imaging a sample onto a detector, said plurality of magnifying imaging systems being arranged in rows and configured to image respective sections of the sample;

providing a scanning mechanism for producing a relative movement between the microscope array and the sample;

operating the scanning mechanism along a linear direction of scan across the sample to produce an image of the sample from a plurality of image-forming signals corresponding to said plurality of magnifying imaging systems;

analyzing said plurality of image-forming signals to produce a measure of image-forming features in said image, wherein said measure is a statistically significant indicator of pathology in portions of said image; and

assigning a visually detectable marker to each of said portions of the image corresponding to image-forming signals that produced said measure;

wherein said rows of imaging systems are staggered with respect to said direction of scan, such that each of the magnifying imaging systems acquires image data corresponding to a respective continuous strip of the sample along said linear direction of scan of the scanning mechanism.

2. The method of claim 1, wherein said image-forming signal is optical density.

3. The method of claim 2, further including the step of combining said marker with the image to produce an information-enriched image.

4. The method of claim 3, wherein said marker is color.

5. The method of claim 2, wherein said marker is color.

6. The method of claim 2, wherein said measure is a statistically significant combination of said optical-density features.

7. The method of claim 6, wherein said marker is color.

8. The method of claim 2, wherein said portions of the image are cell nuclei.

9. The method of claim 2, wherein said microscopic imaging system comprises a plurality of individual miniaturized microscopes in an array microscope.

10. An information-enriched image produced by the method of claim 9.

11. An information-enriched image produced by the method of claim 2.

12. Apparatus for imaging a biological sample with a microscopic imaging system, comprising:

a two-dimensional microscope array with a plurality of magnifying imaging systems disposed along a corresponding plurality of optical axes for imaging a sample onto a detector, said plurality of magnifying imaging systems being arranged in rows and configured to image respective sections of the sample;

a scanning mechanism for producing a relative movement between the microscope array and the sample along a linear direction of scan, so as to produce an image of the sample from a plurality of image-forming signals corresponding to said plurality of magnifying imaging systems;

means for analyzing said plurality of image-forming signals to produce a measure of image-forming features in said image, wherein said measure is a statistically significant indicator of pathology in portions of the image; and

means for assigning a visually detectable marker to each of said portions of the image corresponding to image-forming signals that produced said measure;

wherein said rows of magnifying imaging systems are staggered with respect to said direction of scan, such that each of the imaging systems acquires image data corresponding to a respective continuous strip of the sample along said linear direction of scan of the scanning mechanism.

13. The apparatus of claim 12, wherein said image-forming signal is optical density.

14. The apparatus of claim 13, further including means for combining said marker with the image to produce an information-enriched image.

15. The apparatus of claim 14, wherein said marker is color.

16. The apparatus of claim 13, wherein said marker is color.

17. The apparatus of claim 13, wherein said measure is a statistically significant combination of said optical-density features.

18. The apparatus of claim 17, wherein said marker is color.

19. The apparatus of claim 13, wherein said portions of the image are cell nuclei.

20. The apparatus of claim 13, wherein said microscopic imaging system comprises a plurality of individual miniaturized microscopes in an array microscope.

21. An information-enriched image produced by the apparatus of claim 20.

22. An information-enriched image produced by the apparatus of claim 13.