Evidence map›Paper›PMID 23806780›Full record

ArticleMicrovascular research2013

Automated segmentation and fractal analysis of high-resolution non-invasive capillary perfusion maps of the human retina.

Hong Jiang, Delia Cabrera Debuc, Tatjana Rundek, Byron L Lam, Clinton B Wright, Meixiao Shen, Aizhu Tao, Jianhua Wang

Abstract read
In one paragraph

Article in Microvascular research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

27 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Article
  6. Retinal Neurovascular Signatures in Parkinson's Disease.Investigative ophthalmology & visual science · 2025
    Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Retinal oximetry and fractal analysis of capillary maps in sickle cell disease patients and matched healthy volunteers.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2020
    Observational
  15. Article
  16. Article
  17. Altered Macular Microvasculature in Mild Cognitive Impairment and Alzheimer Disease.Journal of neuro-ophthalmology : the official journal of the North American Neuro-Ophthalmology Society · 2018
    Article
  18. Article
  19. Article
  20. 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

8 authors.

Hong JiangBascom Palmer Eye Institute, University of Miami, Miami, FL, USA; Departemnt of Neurology, University of Miami, Miami, 33136, USA. hjiang@med.miami.edu
Delia Cabrera Debuc
Tatjana Rundek
Byron L Lam
Clinton B Wright
Meixiao Shen
Aizhu Tao
Jianhua Wang

Funding

Shared Equipment ModuleP30EY014801 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI Victor L Perez · 2004 to 2026
$12.2M
Advanced imaging for diabetic retinopathyR01EY020607 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI CABRERA-DEBUC, DELIA · 2011 to 2015
$2.0M
NEI NIH HHS P30 EY014801NEI NIH HHS P30EY014801NEI NIH HHS R01 EY020607NEI NIH HHS R01EY020607NEI NIH HHS R01EY020607S
6 · The paper itself

Abstract

The retina provides a window to study the pathophysiology of cerebrovascular diseases. Pathological retinal microvascular changes may reflect microangiopathic processes in the brain. Recent advances in optical imaging techniques have enabled the imaging of the retinal microvasculature at the capillary level, and the generation of high-resolution, non-invasive capillary perfusion maps (nCPMs) with the Retinal Function Imager (RFI). However, the lack of quantitative analyses of the nCPMs may limit the wider application of the method in clinical research. The goal of this project was to demonstrate the feasibility of automated segmentation and fractal analysis of nCPMs. We took two nCPMs of each subject in a group of 6 healthy volunteers and used our segmentation algorithm to do the automated segmentation for monofractal and multifractal analyses. The monofractal dimension was 1.885±0.020, and the multifractal dimension was 1.876±0.010 (P=0.108). The coefficient of repeatability was 0.070 for monofractal analysis and 0.026 for multifractal analysis. This study demonstrated that the automatic segmentation of nCPMs is feasible for fractal analyses. Both monofractal and multifractal analyses yielded similar results. The quantitative analyses of microvasculature at the capillary level may open up a new era for studying microvascular diseases such as cerebral small vessel disease.

Indexed as

AdultAlgorithmsAutomationCapillariesDiagnostic ImagingElectronic Data ProcessingFemaleFractalsHealthy VolunteersHumansImage Processing, Computer-AssistedMaleMicrovesselsPerfusionRetinaRetinal Vessels

Identifiers

PMID23806780
PMCPMC3773708

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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.