Nonparametric empirical Bayesian framework for fluorescence-lifetime imaging microscopy
- Univ. of Pennsylvania, Philadelphia, PA (United States). Perelman School of Medicine. Dept. of Biostatistics, Epidemiology and Informatics
- Univ. of Wisconsin, Madison, WI (United States). Lab. for Optical and Computational Instrumentation
- Univ. of Wisconsin, Madison, WI (United States). Lab. for Optical and Computational Instrumentation; Morgridge Inst. for Research, Madison, WI (United States)
- Columbia Univ., New York, NY (United States). Dept. of Statistics
Fluorescence lifetime imaging microscopy (FLIM) is a powerful imaging tool used to study the molecular environment of flurophores. In time domain FLIM, extracting lifetime from fluorophores signals entails fitting data to a decaying exponential distribution function. However, most existing techniques for this purpose need large amounts of photons at each pixel and a long computation time, thus making it difficult to obtain reliable inference in applications requiring either short acquisition or minimal computation time. In this work, we introduce a new nonparametric empirical Bayesian framework for FLIM data analysis (NEB-FLIM), leading to both improved pixel-wise lifetime estimation and a more robust and computationally efficient integral property inference. This framework is developed based on a newly proposed hierarchical statistical model for FLIM data and adopts a novel nonparametric maximum likelihood estimator to estimate the prior distribution. To demonstrate the merit of the proposed framework, we applied it on both simulated and real biological datasets and compared it with previous classical methods on these datasets.
- Research Organization:
- Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); USDOE
- Grant/Contract Number:
- SC0019013
- OSTI ID:
- 1569103
- Alternate ID(s):
- OSTI ID: 1803493
- Journal Information:
- Biomedical Optics Express, Vol. 10, Issue 11; ISSN 2156-7085
- Publisher:
- Optical Society of America (OSA)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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