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Raman and FTIR microscopic imaging of colon tissue: a comparative study
Author(s) -
Krafft Christoph,
Codrich Daniela,
Pelizzo Gloria,
Sergo Valter
Publication year - 2008
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.200710005
Subject(s) - myenteric plexus , raman spectroscopy , materials science , fourier transform infrared spectroscopy , connective tissue , resolution (logic) , microscopy , raman microscope , infrared , infrared microscopy , optics , fourier transform , circular muscle , chemistry , nuclear magnetic resonance , pathology , biomedical engineering , raman scattering , biology , medicine , physics , smooth muscle , immunohistochemistry , quantum mechanics , artificial intelligence , computer science , endocrinology
Abstract Colon tissue constitutes a valid model for the comparative analysis of soft tissue by Raman and Fourier transform infrared (FTIR) imaging because it contains four major tissue types such as muscle tissue, connective tissue, epithelium and nerve cells. Raman microscopic images were recorded in the mapping mode using 785 nm laser excitation and a step size of 10 μm from three regions within a thin section that encompassed mucus, mucosa, submucosa, and longitudinal and circular muscle layers. FTIR microscopic images that were composed of 4, 8 and 9 individual images of 4096 spectra each were recorded from the same regions using a FTIR spectrometer coupled to a microscope with a focal plane array detector. Furthermore, Raman microscopic images were recorded at a step size of 2.5 μm from three ganglia that belong to the myenteric plexus. The results are discussed with respect to lateral resolution, spectral resolution, acquisition time and sensitivity of both modalities. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)