Spatial resolution in depth for time-resolved diffuse optical tomography using short source-detector separations - Laboratoire d'Electronique et des Technologies de l'Information
Article Dans Une Revue Biomedical optics express Année : 2015

Spatial resolution in depth for time-resolved diffuse optical tomography using short source-detector separations

Résumé

Diffuse optical tomography for medical applications can require probes with small dimensions involving short source-detector separations. Even though this configuration is seen at first as a constraint due to the challenge of depth sensitivity, we show here that it can potentially be an asset for spatial resolution in depth. By comparing two fiber optic probes on a test object, we first show with simulations that short source-detector separations improve the spatial resolution down to a limit depth. We then confirm these results in an experimental study with a state-of-the-art setup involving a fast-gated single-photon avalanche diode allowing maximum depth sensitivity. We conclude that short source-detector separations are an option to consider for the design of probes so as to improve image quality for diffuse optical tomography in reflectance.
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hal-01131904 , version 1 (06-01-2025)

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Agathe Puszka, Laura Di Sieno, Alberto Dalla Mora, Antonio Pifferi, Davide Contini, et al.. Spatial resolution in depth for time-resolved diffuse optical tomography using short source-detector separations. Biomedical optics express, 2015, 6 (1), pp.1-10. ⟨10.1364/BOE.6.000001⟩. ⟨hal-01131904⟩
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