Abstract
Background: Imaging Mass Spectrometry (IMS) provides a means to measure the spatial distribution of biochemical features on the surface of a sectioned tissue sample. IMS datasets are typically huge and visualisation and subsequent analysis can be challenging. Principal component analysis (PCA) is one popular data reduction technique that has been used and we propose another; the minimum noise fraction (MNF) transform which is popular in remote sensing. Findings: The MNF transform is able to extract spatially coherent information from IMS data. The MNF transform is implemented through an R-package which is available together with example data from http://staff.scm.uws.edu. au/~glenn/#Software. Conclusions: In our example, the MNF transform was able to find additional images of interest. The extracted information forms a useful basis for subsequent analyses.
Original language | English |
---|---|
Number of pages | 6 |
Journal | BMC Research Notes |
Volume | 5 |
Issue number | 419 |
DOIs | |
Publication status | Published - 2012 |
Open Access - Access Right Statement
© 2012 Stone et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Keywords
- dimension reduction (statistics)
- image processing
- imaging mass spectrometry
- matrix, assisted laser desorption, ionization