Refining seizure foci localization: the potential of TSPO-PET.

Acta Epileptol

Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China.

Published: August 2025


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Article Abstract

Translocator protein positron emission tomography (TSPO-PET) is a novel imaging modality that leverages the high expression of TSPO in activated microglia and other cells within seizure foci. It has been increasingly applied in the preoperative evaluation of drug-resistant epilepsy (DRE) to aid in the localization of these foci. With advances in tracer development, TSPO-PET has achieved higher signal-to-noise ratios and broader clinical utility. Clinical studies indicate that TSPO-PET yields significantly higher positive detection rates for seizure foci compared to magnetic resonance imaging and fluorodeoxyglucose positron emission tomography. This review summarizes recent progress in TSPO-PET radiotracer technology, its mechanism of action, and its clinical applications for managing DRE.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12369204PMC
http://dx.doi.org/10.1186/s42494-025-00234-2DOI Listing

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Refining seizure foci localization: the potential of TSPO-PET.

Acta Epileptol

August 2025

Department of Neurology, Huashan Hospital, Fudan University, Shanghai, 200040, China.

Translocator protein positron emission tomography (TSPO-PET) is a novel imaging modality that leverages the high expression of TSPO in activated microglia and other cells within seizure foci. It has been increasingly applied in the preoperative evaluation of drug-resistant epilepsy (DRE) to aid in the localization of these foci. With advances in tracer development, TSPO-PET has achieved higher signal-to-noise ratios and broader clinical utility.

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