Evidence map›Paper›PMID 42841580›Full record

ArticleTranslational vision science & technology2026

Time Series Segmentation in Adaptive Optics Ophthalmoscopy With Application to Flicker-Induced Vasodilation.

Alireza Vard, Abir Aissa, Florence Rossant, Isabelle Bloch, Daniela Castro-Farias, Hugues Chabriat, Michel Paques

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Article in Translational vision science & technology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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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

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Alireza VardMedical Image and Signal Processing Research Center, School of Advanced Technologies in Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
Abir AissaIsep, Institut Supérieur d'Electronique de Paris, Paris, France.
Florence RossantIsep, Institut Supérieur d'Electronique de Paris, Paris, France.
Isabelle BlochSorbonne Université, CNRS, LIP6, Paris, France.
Daniela Castro-FariasClinical Investigation Center 1423, Quinze-Vingts Hospital, Sorbonne Université, INSERM, Paris, France.
Hugues ChabriatReferral Centre CERVCO at the University Hospital Lariboisière in APHP (University Paris Cité), France.
Michel PaquesClinical Investigation Center 1423, Quinze-Vingts Hospital, Sorbonne Université, INSERM, Paris, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: To develop an automated image processing pipeline to segment retinal arterial walls in a series of adaptive optics ophthalmoscopy (AOO) images, overcoming difficulties related to various quality levels within the series, to accurately evaluate morphometric differences. Methods: We first assess the quality of AOO images by deep learning in order to select the best quality image in the sequence. Then, we segment this image by combining deep learning and dedicated active contour models. Finally, we segment the other images of the sequence using the best image segmentation as a regularization exploiting the temporal continuity to compensate for lower quality. Results: We applied the proposed method to flicker series, a challenging use-case given the image quality heterogeneity. The quality assessment method achieves a Spearman correlation coefficient of 0.86, demonstrating very good agreement with the quality ranking established by the medical expert. The automatic segmentation method results in accurate segmentations with a mean root mean square error of 0.5 pixel and 1.8 pixels for the inner and outer borders of the arterial wall, respectively. This leads to accurate and unbiased estimates of the wall to lumen ratio. Conclusions: Our algorithm can be applied as a reliable and useful computer-aided tool to process large time series databases in AOO, and can help experts in longitudinal monitoring applications. Translational Relevance: For the first time, AOO image series can be processed with low supervision to accurately monitor morphometric changes in retinal vascularization.

Indexed as

Image Processing, Computer-AssistedOphthalmoscopyOptics and PhotonicsRetinal ArteryVasodilationAlgorithmsDeep LearningHumansRetinal Vessels

Identifiers

PMID42841580
PMCPMC13657134

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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.