Computational macroscopic lifetime imaging and concentration unmixing of autofluorescence.

Computational macroscopic lifetime imaging and concentration unmixing of autofluorescence.
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DOI:
10.1002/jbio.202200133
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发表时间:
2022-12
影响因子:
2.8
通讯作者:
Intes, Xavier
Intes, Xavier
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Ochoa, Marien;Smith, Jason T.;Gao, Shan;Intes, Xavier

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Single-pixel computational imaging can leverage highly sensitive detectors that concurrently acquire data across spectral and temporal domains. For molecular imaging, such methodology enables to collect rich intensity and lifetime multiplexed fluorescence datasets. Herein we report on the application of a single-pixel structured light-based platform for macroscopic imaging of tissue autofluorescence. The super-continuum visible excitation and hyperspectral single-pixel detection allow for parallel characterization of autofluorescence intensity and lifetime. Furthermore, we exploit a deep learning based data processing pipeline, to perform autofluorescence unmixing while yielding the autofluorophores’ concentrations. The full scheme (setup and processing) is validated in silico and in vitro with clinically relevant autofluorophores flavin adenine dinucleotide, riboflavin, and protoporphyrin. The presented results demonstrate the potential of the methodology for macroscopically quantifying the intensity and lifetime of autofluorophores, with higher specificity for cases of mixed emissions, which are ubiquitous in autofluorescence and multiplexed in vivo imaging.
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