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Updated: Aug 5, 2026
Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy
Published on: September 20, 2024
Development of an age-specific paediatric 2-[18F]fluoro-2-deoxy-D-glucose PET template aligned with paediatric brain
Huan Ma1, Xin Wen1, Haizhou Qiao2
1Nuclear Medicine Department, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China.
Insights
New pediatric brain templates for 2-[18F]fluoro-2-deoxy-D-glucose PET improve epilepsy diagnosis. These age-specific templates enhance the accuracy of localizing the epileptogenic zone in children, outperforming adult templates.
Area of Science:
- Neuroimaging
- Nuclear Medicine
- Pediatric Neurology
Background:
- Accurate localization of the epileptogenic zone is crucial for treating pediatric drug-resistant epilepsy.
- Existing neuroimaging templates are primarily based on adult brain development, potentially limiting their accuracy in pediatric populations.
- Understanding developmental changes in pediatric brain glucose metabolism is essential for improving diagnostic tools.
Purpose of the Study:
- To systematically analyze brain glucose metabolism development in children across all pediatric age ranges.
- To establish age-specific pediatric 2-[18F]fluoro-2-deoxy-D-glucose (FDG) PET brain templates.
- To enhance the accuracy of neuroimaging-based epileptogenic zone localization in pediatric epilepsy.
Main Methods:
- Retrospective analysis of pseudo-control and epilepsy patient groups using 2-[18F]fluoro-2-deoxy-D-glucose PET data.
- Calculation of semi-quantitative parameters (SUVmean, SUVmax) and comparison of standardized uptake ratios.
- Development and validation of age-specific pediatric statistical parametric mapping (SPM) templates.
- Comparison of diagnostic accuracy for epileptogenic zone localization using pediatric versus adult SPM templates, with surgical resection and ECoG as gold standards.
Main Results:
- Pediatric brain glucose metabolism (SUVmean, SUVmax) positively correlated with age, with no significant sex or hemispheric differences.
- The established pediatric SPM template achieved a diagnostic accuracy of 79.0% for epileptogenic zone localization, significantly higher than the adult template (72.5%).
- The pediatric template demonstrated consistent advantages across sexes and superior performance in localizing frontal and temporal lobe epileptogenic zones.
Conclusions:
- Age-specific pediatric SPM templates derived from 2-[18F]fluoro-2-deoxy-D-glucose PET data significantly improve the diagnostic efficacy for pediatric drug-resistant epilepsy.
- These pediatric templates overcome the limitations of adult templates, offering more accurate and reliable preoperative epileptogenic zone localization.
- The developed pediatric templates provide a valuable tool for neuroimaging in pediatric epilepsy, with stable advantages across demographics and specific brain regions.
Abstract:
This study aims to systematically analyse developmental regularities of brain glucose metabolism in children covering the whole paediatric age range and establish age-specific paediatric 2-[18F]fluoro-2-deoxy-D-glucose PET brain templates, thereby improving the accuracy of neuroimaging lesion localization in paediatric populations. A retrospective study was conducted, including a pseudo-control group and an epilepsy group. The pseudo-control group data were used to analyse the cerebral glucose metabolism and establish age-specific paediatric statistical parametric mapping templates. Semi-quantitative parameters (mean standardized uptake value, maximum standardized uptake value) were calculated for each region, and standardized uptake ratio was compared across different reference regions. Age-related trends of these metabolic parameters were analysed to derive paediatric cerebral metabolic developmental patterns. 2-[18F]fluoro-2-deoxy-D-glucose PET images of patients with epilepsy were performed using both the established paediatric template and the standard adult template. Taking surgical resection and electrocorticography results as the gold standard, the accuracy of epileptogenic zone localization by the two templates was compared. The mean standardized uptake value and maximum standardized uptake value in the pseudo-control group showed a significant positive correlation with age, with no significant differences between sex or hemispheres (P > 0.05). In the internal and external validation cohorts, the diagnostic accuracy of the paediatric statistical parametric mapping template for epileptogenic zone localization was 79.0%, which was significantly higher than 72.5% of the adult template (P = 0.033). Stratified analysis showed that the paediatric template had consistent advantages across sex and superior performance in epileptogenic zone localization of frontal and temporal lobes. The advantage of the paediatric template was consistent in both internal and external validation cohorts. The age-specific paediatric statistical parametric mapping template has superior overall diagnostic efficacy in epileptogenic zone localization of paediatric drug-resistant epilepsy, with stable advantages across sex and unique value in specific brain regions. It can overcome the limitations of adult templates in adapting to paediatric brain development characteristics, providing a more accurate and reliable tool for preoperative epileptogenic zone localization in paediatric drug-resistant epilepsy.
