Real-time optical properties and oxygenation imaging using custom parallel processing in the spatial frequency domain.
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 Aug 2019
01 Aug 2019
Historique:
received:
06
05
2019
revised:
06
06
2019
accepted:
11
06
2019
entrez:
28
8
2019
pubmed:
28
8
2019
medline:
28
8
2019
Statut:
epublish
Résumé
The development of real-time, wide-field and quantitative diffuse optical imaging methods is becoming increasingly popular for biological and medical applications. Recent developments introduced a novel approach for real-time multispectral acquisition in the spatial frequency domain using spatio-temporal modulation of light. Using this method, optical properties maps (absorption and reduced scattering) could be obtained for two wavelengths (665 nm and 860 nm). These maps, in turn, are used to deduce oxygen saturation levels in tissues. However, while the acquisition was performed in real-time, processing was performed post-acquisition and was not in real-time. In the present article, we present CPU and GPU processing implementations for this method with special emphasis on processing time. The obtained results show that the proposed custom direct method using a General Purpose Graphic Processing Unit (GPGPU) and C CUDA (Compute Unified Device Architecture) implementation enables 1.6 milliseconds processing time for a 1 Mega-pixel image with a maximum average error of 0.1% in extracting optical properties.
Identifiants
pubmed: 31452984
doi: 10.1364/BOE.10.003916
pii: 366437
pmc: PMC6701546
doi:
Types de publication
Journal Article
Langues
eng
Pagination
3916-3928Déclaration de conflit d'intérêts
The authors declare that there are no conflicts of interest related to this article.
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