Spectral unmixing using component analysis in multispectral optoacoustic tomography

Stefan Morscher, Jürgen Glatz, Nikolaos C. Deliolanis, Andreas Buehler, Athanasios Sarantopoulos, Daniel Razansky, Vasilis Ntziachristos

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Multispectral optoacoustic (photoacoustic) tomography (MSOT) exploits high resolutions given by ultrasound detection technology combined with deeply penetrating laser illumination in the near infrared. Traces of molecules with different spectral absorption profiles, such as blood (oxy- and de-oxygenated) and biomarkers can be recovered using multiple wavelengths excitation and a set of methods described in this work. Three unmixing methods are examined for their performance in decomposing images into components in order to locate fluorescent contrast agents in deep tissue in mice. Following earlier works we find Independent Component Analysis (ICA), which relies on the strong criterion of statistical independence of components, as the most promising approach, being able to clearly identify concentrations that other approaches fail to see. The results are verified by cryosectioning and fluorescence imaging.

Original languageEnglish
Title of host publicationMolecular Imaging III
DOIs
StatePublished - 2011
EventMolecular Imaging III - Munich, Germany
Duration: 22 May 201123 May 2011

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8089
ISSN (Print)1605-7422

Conference

ConferenceMolecular Imaging III
Country/TerritoryGermany
CityMunich
Period22/05/1123/05/11

Keywords

  • Blind deconvolution
  • Independent component analysis
  • Molecular Imaging
  • Multispectral Imaging
  • Photoacoustic tomography
  • Spectral unmixing

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