Carotid Artery Stenosis
Conditions
Brief summary
This study will assess unstable plaque imaging features by using high resolution MR imaging and Sodium Fluoride F-18 PET. This is a comparative study between symptomatic and asymptomatic patient referred to carotid endateriectomy, with reference to pathologic analysis of plaque components
Interventions
prior to surgical endarterectomy each patient will undergo sodium fluoride F-18 PET imaging
Sponsors
Study design
Eligibility
Inclusion criteria
* Age over 18 years old * Health care system affiliation * Referred to carotid endarterectomy * Symptomatic patients: * Carotid stenosis between 70 and 99% (NASCET criteria) * TIA or minor stroke attack (RANKIN ≤ 3) * Asymptomatic patients: * Carotid stenosis between 70 and 99% (NASCET criteria) * No symptoms * Patient who has been informed of the study and has given his/her informed consent
Exclusion criteria
* Contra indication to MRI * Renal failure (clearance \< 30ml/mn) * Patient with active inflammatory disease * History of cancer * Pregnancy or lactation * Patient with carotid disease treated by fibrinolysis * Patient under guardianship, or unable to understand the purpose of the study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| carotid F18-NaF uptake | baseline | do the symptomatic patients have a higher F18-NaF uptake compared to asymptomatic patients? at pre-operative examination |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| comparaison of F18-NaF PET and Carotid MRI | baseline | comparaison between F18-NaF uptake and MR features of plaque instability at pre-operative examination |
| F18-NaF PET uptake | baseline | comparaison between F18-NaF uptake at pre-operative imaging |
| histology | baseline | comparaison between histology at post-operative histologic analysis |
Countries
France