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An open‐source code for Mie extinction extended multiplicative signal correction for infrared microscopy spectra of cells and tissues
Author(s) -
Solheim Johanne H.,
Gunko Evgeniy,
Petersen Dennis,
Großerüschkamp Frederik,
Gerwert Klaus,
Kohler Achim
Publication year - 2019
Publication title -
journal of biophotonics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 66
eISSN - 1864-0648
pISSN - 1864-063X
DOI - 10.1002/jbio.201800415
Subject(s) - absorbance , mie scattering , scattering , spectral line , multiplicative function , spectroscopy , signal (programming language) , optics , initialization , rayleigh scattering , materials science , infrared , physics , infrared spectroscopy , computational physics , chemistry , computer science , biological system , light scattering , mathematics , mathematical analysis , quantum mechanics , astronomy , biology , programming language
Infrared spectroscopy of single cells and tissue is affected by Mie scattering. During recent years, several methods have been proposed for retrieving pure absorbance spectra from such measurements, while currently no user‐friendly version of the state‐of‐the‐art algorithm is available. In this work, an open‐source code for correcting highly scatter‐distorted absorbance spectra of cells and tissues is presented, as well as several improvements of the latest version of the Mie correction algorithm based on extended multiplicative signal correction (EMSC) published by Konevskikh et al. In order to test the stability of the code, a set of apparent absorbance spectra was simulated. To this purpose, pure absorbance spectra based on a Matrigel spectrum are simulated. Scattering contributions where obtained by mimicking the scattering features observed in a set of experimentally obtained spectra . It can be concluded that the algorithm is not depending strongly on the reference spectrum used for initializing the algorithm and retrieves well the underlying pure absorbance spectrum. The calculation time of the algorithm is considerably improved with respect to the resonant Mie scattering EMSC algorithm used by the community today.