Abstract
Maximal safe resection is of utmost importance when operating on intracranial tumors. However, the discrimination between physiological and malignant tissue is challenging. A solution is 5-aminolevulinic acid (5-ALA) induced protoporphyrin IX (PPIX) fluorescence of malignant cells, which has evolved as powerful intraoperative tool for tumor identification. We investigated 43 samples obtained during 5-ALA guided surgery using a combined optical coherence microscopy (OCM) and fluorescence imaging system and compared results to cell density maps utilizing digital pathology. Based on fluorescence intensity, attenuation coefficients, and cell density, tumor core was differentiated from tumor-associated brain parenchyma with high sensitivity and specificity.
Published Version
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