Simultaneous diffuse optical and bioluminescence tomography to account for signal attenuation to improve source localization.
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 Nov 2020
01 Nov 2020
Historique:
received:
30
06
2020
revised:
17
09
2020
accepted:
17
09
2020
entrez:
7
12
2020
pubmed:
8
12
2020
medline:
8
12
2020
Statut:
epublish
Résumé
Photonics based pre-clinical imaging is an extensively used technique to allow for the study of biologically relevant activity typically within a small-mouse model. Namely, bioluminescent tomography (BLT) attempts to tomographically reconstruct the 3-dimensional spatial light distribution of luminophores within a small animal given surface light measurements and known underlying optical parameters. Often it is the case where these optical parameters are unknown leading to the use of a 'best' guess approach or to direct measurements using either a multi-modal or dedicated system. Using these conventional approaches can lead to both inaccurate results and extending periods of imaging time. This work introduces the development of an algorithm that is used to accurately localize the spatial light distribution from a bioluminescence source within a subject by simultaneously reconstructing both the underlying optical properties and source spatial distribution and intensity from the same set of surface measurements. Through its application in 2- and 3-dimensional, homogeneous and heterogenous numerical models, it is demonstrated that the proposed algorithm is capable of replicating results as compared to 'gold' standard where the absolute optical properties are known. Additionally, the algorithm has been applied to experimental data using a tissue mimicking block phantom, recovering a spatial light distribution that has a localization error of ∼1.53 mm, which is better than previously published results without the need of assumptions regarding the underlying optical properties or source distribution.
Identifiants
pubmed: 33282499
doi: 10.1364/BOE.401671
pii: 401671
pmc: PMC7687966
doi:
Types de publication
Journal Article
Langues
eng
Pagination
6428-6444Informations de copyright
Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Déclaration de conflit d'intérêts
The authors declare that there are no conflicts of interest related to this article.
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