Multimodal PET Imaging With 18F-FDG/SV2A/TSPO for Resection Planning in Drug-Resistant Epilepsy

NCT ID: NCT07147309

Last Updated: 2025-08-29

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Total Enrollment: 60 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2025-09-01
• Study Completion Date: 2029-09-01

Brief Summary

This study focuses on the application value of 18F-FDG, SV2A, and TSPO PET imaging in the preoperative localization of epileptogenic foci in epilepsy. 18F-FDG PET detects glucose metabolism in brain tissue and is characterized by reduced metabolism during the interictal period. It is currently the most commonly used localization method in clinical practice, especially suitable for temporal lobe epilepsy, but has limited sensitivity to foci with insignificant metabolic changes. SV2A PET targets synaptic vesicle proteins and reflects synaptic density, showing reduced uptake in epileptogenic foci areas. It has high localization accuracy, can effectively supplement the diagnosis of 18F-FDG PET-negative cases, and also has good application prospects in non-temporal lobe epilepsy. TSPO PET monitors microglial activation to reflect neuroinflammation, with increased uptake in epileptogenic foci areas, and has unique auxiliary diagnostic value in refractory epilepsy and cases with concurrent brain injury. The combined application of the three can provide a more comprehensive imaging basis for preoperative localization of epilepsy, helping to optimize surgical plans.

Conditions

Epilepsy; PET / MR; Synaptic Vesicle Proteins; Microglial Activation; FDG PET

Study Design

• Observational Model Type: CASE_CONTROL
• Study Time Perspective: PROSPECTIVE

Eligibility Criteria

Inclusion Criteria

• with drug-resistant focal epilepsy defined by ILAE criteria
• Already performed 3.0 T epilepsy-protocol MRI and video-EEG
• Planned resective surgery or stereotactic EEG (SEEG) electrode implantation, and willingness to undergo all three PET scans: ¹⁸F-FDG, SV2A, and TSPO.
• Ability to understand study procedures and provide written informed consent.
• Availability of complete postoperative follow-up data with at least 12-month Engel outcome classification.

Exclusion Criteria

-History of head trauma ,claustrophobia, rheumatic or autoimmune diseases, psychiatric disorders, severe somatic diseases (neurological,cardiovascular, etc.),previous heart or brain surgery, substance abuse, inability to refrain from hypnotics, magnetic implants, pregnancy, lactation

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 50 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Weibing Miao, PhD

OTHER

Sponsor Role: lead

Responsible Party

Weibing Miao, PhD

professor

Responsibility Role: SPONSOR_INVESTIGATOR

Central Contacts

Zhang Ying Zhang Ying, MD

Role: CONTACT

zy201@126.com

+86-15005018972

Other Identifiers

FirstAHFujian-2504

Identifier Type: -

Identifier Source: org_study_id