Evidence map›Paper›PMID 27356625›Full record

ArticleScientific reports2016

Wide-field imaging of birefringent synovial fluid crystals using lens-free polarized microscopy for gout diagnosis.

Yibo Zhang, Seung Yoon Celine Lee, Yun Zhang, Daniel Furst, John Fitzgerald, Aydogan Ozcan

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
3.7field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 63 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Yibo ZhangElectrical Engineering Department, University of California, Los Angeles, CA, 90095, USA.
Seung Yoon Celine LeeDivision of Rheumatology, Department of Internal Medicine, University of California, Los Angeles, CA, 90095, USA.
Yun ZhangElectrical Engineering Department, University of California, Los Angeles, CA, 90095, USA.
Daniel FurstDivision of Rheumatology, Department of Internal Medicine, University of California, Los Angeles, CA, 90095, USA.
John FitzgeraldDivision of Rheumatology, Department of Internal Medicine, University of California, Los Angeles, CA, 90095, USA.
Aydogan OzcanElectrical Engineering Department, University of California, Los Angeles, CA, 90095, USA.
California NanoSystems Institute · USUniversity of California, Los Angeles · US

Funding

Development and validation of lens-free polarized microscopy to identify mono-sodium urate and calcium pyrophosphate crystals from synovial fluidR21AR072946 · NIAMS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI FITZGERALD, JOHN D, OZCAN, AYDOGAN · 2018 to 2019
$375k
ARRA NIH HHSHoward Hughes Medical InstituteNIAMS NIH HHS R21 AR072946
6 · The paper itself

Abstract

Gout is a form of crystal arthropathy where monosodium urate (MSU) crystals deposit and elicit inflammation in a joint. Diagnosis of gout relies on identification of MSU crystals under a compensated polarized light microscope (CPLM) in synovial fluid aspirated from the patient's joint. The detection of MSU crystals by optical microscopy is enhanced by their birefringent properties. However, CPLM partially suffers from the high-cost and bulkiness of conventional lens-based microscopy, and its relatively small field-of-view (FOV) limits the efficiency and accuracy of gout diagnosis. Here we present a lens-free polarized microscope which adopts a novel differential and angle-mismatched polarizing optical design achieving wide-field and high-resolution holographic imaging of birefringent objects with a color contrast similar to that of a standard CPLM. The performance of this computational polarization microscope is validated by imaging MSU crystals made from a gout patient's tophus and steroid crystals used as negative control. This lens-free polarized microscope, with its wide FOV (>20 mm(2)), cost-effectiveness and field-portability, can significantly improve the efficiency and accuracy of gout diagnosis, reduce costs, and can be deployed even at the point-of-care and in resource-limited clinical settings.

Indexed as

AlgorithmsBirefringenceCrystallizationGoutHumansMicroscopy, PolarizationPoint-of-Care SystemsSteroidsSynovial FluidUric AcidSteroidsUric Acid

Identifiers

PMID27356625
PMCPMC4928089
OpenAlexW2469215974

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.