Paper Info
Title
Monte Carlo modeling of time-resolved fluorescence for depth-selective interrogation of layered tissue
Abstract
Computational approaches for simulation of light-tissue interactions have provided extensive insight into biophotonic procedures for diagnosis and therapy. However, few studies have addressed simulation of time-resolved fluorescence (TRF) in tissue and none have combined Monte Carlo simulations with standard TRF processing algorithms to elucidate approaches for cancer detection in layered biological tissue. In this study, we investigate how illumination-collection parameters (e.g., collection angle and source-detector separation) influence the ability to measure fluorophore lifetime and tissue layer thickness. Decay curves are simulated with a Monte Carlo TRF light propagation model. Multi-exponential iterative deconvolution is used to determine lifetimes and fractional signal contributions. The ability to detect changes in mucosal thickness is optimized by probes that selectively interrogate regions superficial to the mucosal-submucosal boundary. Optimal accuracy in simultaneous determination of lifetimes in both layers is achieved when each layer contributes 40-60% of the signal. These results indicate that depth-selective approaches to TRF have the potential to enhance disease detection in layered biological tissue and that modeling can play an important role in probe design optimization.
Year
DOI
Venue
2011
10.1016/j.cmpb.2010.10.011
Computer Methods and Programs in Biomedicine
Keywords
Field
DocType
monte carlo simulation,monte carlo
Computer vision,Monte Carlo method,Biological system,Computer science,Fluorescence,Layer thickness,Deconvolution,Cancer detection,Fluorophore,Artificial intelligence,Biological tissue,Time-resolved spectroscopy
Journal
Volume
Issue
ISSN
104
2
0169-2607
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
T. Joshua Pfefer131.49
Quanzeng Wang211.69
Rebekah A. Drezek301.01