Journal
OPTICS EXPRESS
Volume 28, Issue 7, Pages 9860-9874Publisher
Optica Publishing Group
DOI: 10.1364/OE.385392
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Funding
- Schweizerischer Nationalfonds zur Forderung der Wissenschaftlichen Forschung [159490, 178262]
- Horizon 2020 Framework Programme [801347]
- Ministerio de Economia y Competitividad [FIS2016-77892-R]
- Krebsforschung Schweiz [KFS-3732-08-2015]
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Fluorescence molecular tomography (FMT) emerges as a powerful non-invasive imaging tool with the ability to resolve fluorescence signals from sources located deep in living tissues. Yet, the accuracy of FMT reconstruction depends on the deviation of the assumed optical properties from the actual values. In this work, we improved the accuracy of the initial optical properties required for FMT using a new-generation time-domain (TD) near-infrared optical tomography (NIROT) system, which effectively decouples scattering and absorption coefficients. We proposed a multimodal paradigm combining TD-NIROT and continuous-wave (CW) FMT. Both numerical simulation and experiments were performed on a heterogeneous phantom containing a fluorescent inclusion. The results demonstrate significant improvement in the FMT reconstruction by taking the NIROT-derived optical properties as prior information. The multimodal method is attractive for preclinical studies and tumor diagnostics since both functional and molecular information can be obtained. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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