IP Library Granted Patent US 11,079,718
Granted Patent B2
US 11,079,718 · App. 16/651,996 · Granted Aug 3, 2021

Specific malaria detection with digital holographic microscopy

Inventors: Oliver Hayden (Moosburg, DE); Lukas Richter (Hirschaid, DE); Matthias Ugele (Neumarkt, DE); Gaby Marquardt (Hausen, DE); Manfred Stanzel (Berching, DE)
Assignee: Siemens Healthcare GmbH
G03H1/0443G01N33/4915G01N15/14G03H2001/005G03H2001/0471
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Quick Facts
Patent No.
US 11,079,718
App. No.
16/651,996
Granted
Aug 3, 2021
Kind
B2
Abstract

The present invention relates to a method of detecting a possible infection of malaria in a patient using a digital optical microscope.

Claims (16)

1. A method of detecting a possible infection of malaria in a patient, comprising:

providing a digital holographic microscope (DHM),

obtaining or providing a sample comprising at least one red blood cell suspected of being affected by malaria obtained from the patient,

mixing the sample comprising the at least one red blood cell with a buffer solution to form the at least one red blood cell into a sphere shape to form a sphere-shaped red blood cell, and introducing the buffer solution comprising the at least one sphere-shaped red blood cell into a microfluidic device, wherein at least one part of a channel of the microfluidic device is comprised in a focal area of the DHM, or introducing the sample comprising the at least one red blood cell into a microfluidic device, and mixing the sample comprising the at least one red blood cell with a buffer solution to form the at least one red blood cell into a sphere shape to form a sphere-shaped red blood cell, wherein at least one part of a channel of the microfluidic device is comprised in a focal area of the DHM,

guiding the at least one sphere-shaped red blood cell into the focal area of the DHM,

detecting the at least one sphere-shaped red blood cell with the DHM, and

determining whether the at least one red blood cell is affected by malaria to determine whether the patient is infected by malaria.

2. The method of claim 1 , wherein the detecting the at least one sphere-shaped red blood cell with the DHM comprises reconstructing the phase and amplitude image obtained by the DHM.

3. The method of claim 1 , wherein a cell volume or cell diameter of the at least one sphere-shaped red blood cell is determined with the DHM to identify a development stage and species of a malaria parasite.

4. The method of claim 1 , wherein at least ⅔ of a volume of the at least one sphere-shaped red blood cell is detected with the DHM.

5. The method of claim 1 , wherein malaria tertiana, malaria tropica , and malaria quartana are differentiated using the DHM.

6. The method of claim 5 , wherein a multitude of red blood cells is detected using the DHM, wherein different stages of malaria species are determined for the multitude of red blood cells.

7. The method of claim 6 , wherein a parasitemia of the multitude of red blood cells is determined comprising determining the ratio of a number of infected cells to a number of total cells.

8. The method of claim 6 , wherein 1*10 4 to 1*10 6 red blood cells are detected.

9. The method of claim 1 , wherein the at least one red blood cell is isolated from an original sample of the patient, the original sample comprising the at least one red blood cell.

10. The method of claim 9 , wherein the original sample of the patient comprises a blood sample.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 20, 2023
From: SIEMENS HEALTHCARE GMBH
To: SIEMENS HEALTHINEERS AG
Reel/Frame 066267/0346 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 13, 2020
From: HAYDEN, OLIVER; RICHTER, LUKAS; UGELE, MATTHIAS; MARQUARDT, GABY; STANZEL, MANFRED
To: SIEMENS HEALTHCARE GMBH
Reel/Frame 052651/0898 →
Priority Claims (1)
EP 17193959 · Sep 29, 2017 · regional
Continuity (1)
Related Publication 20200264557A1 · Aug 20, 2020