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A Three-Dimensional Multivariate Image Proccessing Technique for the Analysis of FTIR Spectroscopic Images of Multiple Tissue Sections

By Bayden R. Wood, Keith R. Bambery, Corey J. Evans, Michael A. Quinn and Don McNaughton

Abstract

Background:\ud \ud Three-dimensional (3D) multivariate Fourier Transform Infrared (FTIR) image maps of tissue sections are presented. A villoglandular adenocarcinoma from a cervical biopsy with a number of interesting anatomical features was used as a model system to demonstrate the efficacy of the technique.\ud Methods:\ud \ud Four FTIR images recorded using a focal plane array detector of adjacent tissue sections were stitched together using a MATLAB® routine and placed in a single data matrix for multivariate analysis using Cytospec™. Unsupervised Hierarchical Cluster Analysis (UHCA) was performed simultaneously on all 4 sections and 4 clusters plotted. The four UHCA maps were then stacked together and interpolated with a box function using SCIRun software.\ud Results:\ud \ud The resultant 3D-images can be rotated in three-dimensions, sliced and made semi-transparent to view the internal structure of the tissue block. A number of anatomical and histopathological features including connective tissue, red blood cells, inflammatory exudate and glandular cells could be identified in the cluster maps and correlated with Hematoxylin & Eosin stained sections. The mean extracted spectra from individual clusters provide macromolecular information on tissue components.\ud Conclusion:\ud \ud 3D-multivariate imaging provides a new avenue to study the shape and penetration of important anatomical and histopathological features based on the underlying macromolecular chemistry and therefore has clear potential in biology and medicine.Peer-reviewedPublisher Versio

Publisher: BioMed Central Ltd
Year: 2006
DOI identifier: 10.1186/1471-2342-6-12
OAI identifier: oai:lra.le.ac.uk:2381/3401
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