Lossless temporal contrast analysis of laser speckle images from periodic signals.
Journal
Biomedical optics express
ISSN: 2156-7085
Titre abrégé: Biomed Opt Express
Pays: United States
ID NLM: 101540630
Informations de publication
Date de publication:
01 Apr 2023
01 Apr 2023
Historique:
received:
18
01
2023
revised:
21
02
2023
accepted:
24
02
2023
medline:
20
4
2023
pubmed:
20
4
2023
entrez:
20
04
2023
Statut:
epublish
Résumé
Laser speckle contrast imaging is a technique that provides valuable physiological information about vascular topology and blood flow dynamics. When using contrast analysis, it is possible to obtain detailed spatial information at the cost of sacrificing temporal resolution and vice versa. Such a trade-off becomes problematic when assessing blood dynamics in narrow vessels. This study presents a new contrast calculation method that preserves fine temporal dynamics and structural features when applied to periodic blood flow changes, such as cardiac pulsatility. We use simulations and in vivo experiments to compare our method with the standard spatial and temporal contrast calculations and demonstrate that the proposed method retains the spatial and temporal resolutions, resulting in the improved estimation of the blood flow dynamics.
Identifiants
pubmed: 37078029
doi: 10.1364/BOE.485951
pii: 485951
pmc: PMC10110321
doi:
Types de publication
Journal Article
Langues
eng
Pagination
1355-1363Informations de copyright
© 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.
Déclaration de conflit d'intérêts
The authors declare no conflicts of interest.
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