Improved sensitivity to fluorescence for cancer detection in wide-field image-guided neurosurgery

Michael Jermyn, Yoann Gosselin, Pablo A. Valdes, Mira Sibai, Kolbein Kolste, Jeanne Mercier, Leticia Angulo, David W. Roberts, Keith D. Paulsen, Kevin Petrecca, Olivier Daigle, Brian C. Wilson, Frederic Leblond

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

In glioma surgery, Protoporphyrin IX (PpIX) fluorescence may identify residual tumor that could be resected while minimizing damage to normal brain. We demonstrate that improved sensitivity for wide-field spectroscopic fluorescence imaging is achieved with minimal disruption to the neurosurgical workflow using an electron-multiplying charge-coupled device (EMCCD) relative to a state-of-the-art CMOS system. In phantom experiments the EMCCD system can detect at least two orders-ofmagnitude lower PpIX. Ex vivo tissue imaging on a rat glioma model demonstrates improved fluorescence contrast compared with neurosurgical fluorescence microscope technology, and the fluorescence detection is confirmed with measurements from a clinically-validated spectroscopic probe. Greater PpIX sensitivity in wide-field fluorescence imaging may improve the residual tumor detection during surgery with consequent impact on survival.

Original languageEnglish (US)
Article number252150
Pages (from-to)5063-5074
Number of pages12
JournalBiomedical Optics Express
Volume6
Issue number12
DOIs
StatePublished - Nov 30 2015
Externally publishedYes

Keywords

  • Medical optics instrumentation
  • Spectroscopy, fluorescence and luminescence

ASJC Scopus subject areas

  • Biotechnology
  • Atomic and Molecular Physics, and Optics

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