5-ALA-induced PpIX fluorescence in gliomas resection: spectral complexity of the emission spectrum in the infiltrative compound

Bruno Montcel; Laurent Mahieu-Williame; Xavier Armoiry; David Meyronet; Jacques Guyotat

doi:10.1117/12.2033472

24 June 2013 5-ALA-induced PpIX fluorescence in gliomas resection: spectral complexity of the emission spectrum in the infiltrative compound

Bruno Montcel, Laurent Mahieu-Williame, Xavier Armoiry, David Meyronet, Jacques Guyotat

Author Affiliations +

Proceedings Volume 8804, Neurophotonics; 880409 (2013) https://doi.org/10.1117/12.2033472
Event: European Conferences on Biomedical Optics, 2013, Munich, Germany

Abstract

5-ALA-induced protoporphyrin IX (PpIX) fluorescence enables to guiding in intra-operative surgical glioma resection. However at present, it has yet to be shown that this method is able to identify infiltrative component of glioma. In extracted tumor tissues we measured a two-peaked emission in low grade gliomas and in the infiltrative component of glioblastomas due to multiple photochemical states of PpIX. This spectral complexity of the fluorescence emission spectrum brings new limits in the sensibility of current methods to measured PpIX concentration. We propose new measured parameters, by taking into consideration the spectral complexity, to overcome these limitations in sensitivity. These parameters clearly distinguish the solid component of glioblastomas from low grade gliomas and infiltrative component of glioblastomas.

Citation Download Citation

Bruno Montcel, Laurent Mahieu-Williame, Xavier Armoiry, David Meyronet, and Jacques Guyotat "5-ALA-induced PpIX fluorescence in gliomas resection: spectral complexity of the emission spectrum in the infiltrative compound", Proc. SPIE 8804, Neurophotonics, 880409 (24 June 2013); https://doi.org/10.1117/12.2033472

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