Healthy
Conditions
Brief summary
Epilepsy is the most common chronic neurological disorder in the world, affecting more than 50 million people worldwide. Approximately 35% of patients with epilepsy are refractory to all available antiepileptic drugs. Focal Hypometabolism on interictal \[18F\]-FDG PET is a hallmark of the Seizure Onset Zone as well as surrounding areas. Using \[18F\]-FDG PET is thus particularly useful to determine the seizure onset zone of epileptic patients and thus to guide surgical treatment when antiepileptic drugs fail. Interpretation of PET images primarily relies on standard visual analysis, but statistical analysis, with the widely used Statistical Parametric Mapping (SPM) software improves the diagnostic yield of PET. Over the past years, some authors have thus reported that the use of SPM can result in greater sensitivity and specificity of PET imaging in patients with partial epilepsy. In order to perform statistical analysis of PET images to compare brain metabolism of epileptic patients and healthy controls, it is necessary to collect a normative database of \[18F\]-FDG PET images in healthy controls. The purpose of this study is (i) collect a normative database of \[18F\]-FDG PET images in healthy adults controls to evaluate rigorously the diagnostic value of multimodal imaging for non-invasive localization of the EZ and (ii) to evaluate the test-retest reliability of \[18F\]-FDG PET scanning.
Interventions
OTHERPET [18F] FDG
Measurement of carbohydrate metabolism at the individual level. Standardization of the individual imaging data in a standard anatomical space and then calculation of an average image through the group-level controls.
OTHERAnatomical MRI
All subjects will benefit from a 3D anatomical MRI to control the normality of their MRI and an automatic segmentation of 73 brain regions by multi-atlas segmentation.
Sponsors
Hospices Civils de Lyon
Study design
Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
20 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* healthy adult controls * Age 20-65 years * Signed informed consent form.
Exclusion criteria
* Contraindication to the MRI * Known neurological disease * Adult subject to legal protection measure. * Women of childbearing age who do not have effective contraception
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Glucose Metabolism of the whole brain estimated with [18F]-FDG PET in healthy controls. | Day 1 | 40 healthy controls (age range 20-65 years) will undergo \[18F\]-FDG PET. The Glucose Metabolism for whole brain will be determined with \[18F\]-FDG PET for each subject. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Test-reliability | Week 2 | For each subject, we will measure Glucose Metabolism of the whole brain estimated with \[18F\]-FDG PET for the first PET scan and for the second PET scan and evaluate the potential difference of Glucose Metabolism between the two scans. |
Countries
France
Outcome results
None listed