Volume 13, Issue 1 e201960036
LETTER

Pathological crystal imaging with single-shot computational polarized light microscopy

Bijie Bai

Bijie Bai

Electrical and Computer Engineering Department, University of California, Los Angeles, Los Angeles, California

Bioengineering Department, University of California, Los Angeles, Los Angeles, California

California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California

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Hongda Wang

Hongda Wang

Electrical and Computer Engineering Department, University of California, Los Angeles, Los Angeles, California

Bioengineering Department, University of California, Los Angeles, Los Angeles, California

California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California

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Tairan Liu

Tairan Liu

Electrical and Computer Engineering Department, University of California, Los Angeles, Los Angeles, California

Bioengineering Department, University of California, Los Angeles, Los Angeles, California

California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California

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Yair Rivenson

Yair Rivenson

Electrical and Computer Engineering Department, University of California, Los Angeles, Los Angeles, California

Bioengineering Department, University of California, Los Angeles, Los Angeles, California

California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California

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John FitzGerald

John FitzGerald

Division of Rheumatology, Department of Internal Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California

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Aydogan Ozcan

Corresponding Author

Aydogan Ozcan

Electrical and Computer Engineering Department, University of California, Los Angeles, Los Angeles, California

Bioengineering Department, University of California, Los Angeles, Los Angeles, California

California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California

Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California

Correspondence

Aydogan Ozcan, University of California, Los Angeles, CA 90095.

Email: [email protected]

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First published: 04 September 2019
Citations: 25
Bijie Bai and Hongda Wang contributed equally to this study.

Funding information: National Institutes of Health, Grant/Award Number: R21AR072946

Abstract

Pathological crystal identification is routinely practiced in rheumatology for diagnosing arthritis disease such as gout, and relies on polarized light microscopy as the gold standard method used by medical professionals. Here, we present a single-shot computational polarized light microscopy method that reconstructs the transmittance, retardance and slow-axis orientation of a birefringent sample using a single image captured with a pixelated-polarizer camera. This method is fast, simple-to-operate and compatible with all the existing standard microscopes without extensive or costly modifications. We demonstrated the success of our method by imaging three different types of crystals found in synovial fluid and reconstructed the birefringence information of these samples using a single image, without being affected by the orientation of individual crystals within the sample field-of-view. We believe this technique will provide improved sensitivity, specificity and speed, all at low cost, for clinical diagnosis of crystals found in synovial fluid and other bodily fluids.image

CONFLICT OF INTEREST

A.O., B.B., and H.W. have a pending patent application on the presented technique. The remaining authors declare that they have no conflict of interest.

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