DESI Mass Spectrometry Imaging (MSI)

Methods Mol Biol. 2017:1618:65-75. doi: 10.1007/978-1-4939-7051-3_7.

Abstract

Desorption Electrospray Ionization (DESI) mass spectrometry is a technique that allows chemical information to be obtained directly from a wide range of surfaces. Using a 2D stage, DESI can be implemented in an imaging mode whereby MS spectra are collected by rastering the spray across the whole surface. Here, we describe the implementation and optimization of DESI imaging for metabolites and lipids from tissue sections using oa-TOF mass spectrometers.

Keywords: DESI; Imaging; Lipids; MS; MSI.

MeSH terms

  • Lipids / chemistry*
  • Mass Spectrometry / methods
  • Spectrometry, Mass, Electrospray Ionization / methods*

Substances

  • Lipids