Evidence map›Paper›PMID 26309748›Full record

ArticleBiomedical optics express2015

Measuring oxygen saturation in retinal and choroidal circulations in rats using visible light optical coherence tomography angiography.

Siyu Chen, Ji Yi, Hao F Zhang

Open access · goldAbstract read
In one paragraph

Article in Biomedical optics express, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 1 pooled it
5.1field-weighted citation impact, top 4% 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

43 citing papers in PubMed, 1 synthesis or guideline pooled it, 66 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Advances in Retinal Oximetry.Translational vision science & technology · 2021
    Review
  17. Article
  18. Article
  19. Article
  20. Quantitative quality-control metrics forBiomedical optics express · 2019
    Article
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

3 authors at 1 institution in 1 country.

Siyu ChenDepartment of Biomedical Engineering, Northwestern University, 2145 Sheridan Rd. Evanston, IL 60208 USA ; These authors contributed equally to this work.
Ji YiDepartment of Biomedical Engineering, Northwestern University, 2145 Sheridan Rd. Evanston, IL 60208 USA ; These authors contributed equally to this work.
Hao F ZhangDepartment of Biomedical Engineering, Northwestern University, 2145 Sheridan Rd. Evanston, IL 60208 USA ; Department of Ophthalmology, Northwestern University, 2145 Sheridan Rd., Evanston 60208, USA.
Northwestern University · US

Funding

Novel Antiangiogenic Peptides for Treatment of Exudative AMDR24EY022883 · NEI · UNIVERSITY OF WISCONSIN-MADISON · PI SHEIBANI, NADER · 2013 to 2017
$6.2M
Multimodal Retinal Functional Imaging for Diabetic RetinopathyR01EY019951 · NEI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI FAWZI, AMANI A, JIAO, SHULIANG · 2011 to 2015
$3.0M
NEI NIH HHS R01 EY019951NEI NIH HHS R24 EY022883
6 · The paper itself

Abstract

Visible light optical coherence tomography (vis-OCT) has demonstrated its capability of measuring vascular oxygen saturation (sO2) in vivo. Enhanced by OCT angiography, the signal from microvasculature can be further isolated and directly used for sO2 extraction. In this work, we extended the theoretical formulation for OCT angiography-based oximetry by incorporating the contribution from motion contrast enhancement. We presented a new method to eliminate the associated confounding variables due to blood flow. First, we performed in vitro experiments to verify our theory, showing a stable spectral derivative within the selected wavelength bands for sO2 extraction. Then, we tested our method in vivo to measure retinal sO2 in rats inhaling different gas mixtures: normal air, 5% CO2, pure O2, and 10% O2. Absolute sO2 values in major arterioles and venules in the retinal circulation can be accurately measured. In addition, we demonstrated the relative changes of sO2 can be measured non-invasively from choriocapillaris immediately underneath the retinal pigmented epithelium (RPE) in rodents.

Indexed as

(110.4500) Optical coherence tomography(170.1460) Blood gas monitoring(170.2655) Functional monitoring and imaging(170.6480) Spectroscopy, speckle

Identifiers

PMID26309748
PMCPMC4541512
OpenAlexW1180073186

What OpenQuestion holds

Textmetadata
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.