Volume 16, Issue 4 e202200291
RESEARCH ARTICLE

Intraoperative detection of IDH-mutant glioma using fluorescence lifetime imaging

Silvia Noble Anbunesan

Silvia Noble Anbunesan

Department of Biomedical Engineering, University of California Davis, Davis, California, USA

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Alba Alfonso-Garcia

Alba Alfonso-Garcia

Department of Biomedical Engineering, University of California Davis, Davis, California, USA

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Xiangnan Zhou

Xiangnan Zhou

Department of Biomedical Engineering, University of California Davis, Davis, California, USA

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Julien Bec

Julien Bec

Department of Biomedical Engineering, University of California Davis, Davis, California, USA

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Han Sung Lee

Han Sung Lee

Department of Pathology and Laboratory Medicine, University of California Davis, Sacramento, California, USA

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Lee-Way Jin

Lee-Way Jin

Department of Pathology and Laboratory Medicine, University of California Davis, Sacramento, California, USA

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Orin Bloch

Orin Bloch

Department of Neurological Surgery, University of California Davis, Sacramento, California, USA

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Laura Marcu

Corresponding Author

Laura Marcu

Department of Biomedical Engineering, University of California Davis, Davis, California, USA

Department of Neurological Surgery, University of California Davis, Sacramento, California, USA

Correspondence

Laura Marcu, Department of Biomedical Engineering, University of California Davis, Davis, CA, USA.

Email: [email protected]

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First published: 12 December 2022
Citations: 1

Abstract

Identifying isocitrate dehydrogenase (IDH)-mutation and glioma subtype during surgery instead of days later can aid in modifying tumor resection strategies for better survival outcomes. We report intraoperative identification of IDH-mutant glioma (N = 12 patients) with a clinically compatible fluorescence lifetime imaging (FLIm) device (excitation: 355 nm; emission spectral bands: 390/40 nm, 470/28 nm, 542/50 nm). The fluorescence-derived parameters were analyzed to study the optical contrast between IDH-mutant tumors and surrounding brain tissue. IDH-mutant oligodendrogliomas exhibited shorter lifetimes (3.3 ± 0.1 ns) than IDH-mutant astrocytomas (4.1 ± 0.1 ns). Both IDH-mutant glioma subtypes had shorter lifetimes than white matter (4.6 ± 0.4 ns) but had comparable lifetimes to cortex. Lifetimes also increased with malignancy grade within IDH-mutant oligodendrogliomas (grade 2: 2.96 ± 0.08 ns, grade 3: 3.4 ± 0.3 ns) but not within IDH-mutant astrocytomas. The current results support the feasibility of FLIm as a surgical adjuvant for identifying IDH-mutant glioma tissue.image

CONFLICT OF INTEREST

The authors declare no financial or commercial conflict of interest.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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