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Clinical assessment of carotid atherosclerosis inflammation by positron emission tomography
J Shalhoub1, Y Oskrochi, A H Davies
1Division of Brain Sciences, Department of Medicine, 5th Floor, Burlington Danes Building, Imperial College London, Hammersmith Hospital, London W12 0NN, UK. d.owen@imperial.ac.uk.
Insights
Positron emission tomography (PET) can identify inflammation in carotid plaques, predicting stroke risk. This allows targeted treatment for high-risk patients with carotid atherosclerosis, potentially reducing stroke incidence.
Area of Science:
- Neuroscience
- Cardiovascular Medicine
- Medical Imaging
Background:
- Carotid atherosclerosis is a major cause of stroke and disability.
- Endarterectomy reduces stroke risk for symptomatic plaques but management of asymptomatic plaques is unclear.
- Plaque inflammation is a key predictor of rupture and subsequent stroke.
Purpose of the Study:
- To investigate the use of positron emission tomography (PET) for in vivo identification of inflammation in carotid plaques.
- To determine if PET imaging can differentiate high-risk plaques prone to rupture.
Main Methods:
- Utilized positron emission tomography (PET) to visualize and quantify inflammation within carotid plaques.
- Correlated imaging findings with clinical outcomes and plaque characteristics.
Main Results:
- PET imaging successfully identified inflammation in carotid plaques.
- Inflammatory markers detected by PET correlated with increased risk of cerebrovascular events.
Conclusions:
- PET imaging offers a promising method to identify high-risk carotid plaques.
- Targeted medical or surgical interventions can be directed to patients with PET-identified high-risk plaques, potentially reducing stroke events.
Abstract:
Stroke caused by carotid atherosclerosis is a leading cause of mortality and the leading cause of disability in the developed world. For carotid plaques within the neurovascular territory of a recent stroke or transient ischaemic attack, surgical removal of the plaque (endarterectomy) has been clearly shown to reduce future cerebrovascular events. Management of asymptomatic plaques, however, is less clear because only a minority of these plaques will ultimately become symptomatic. Inflammation is a key feature which predicts whether a plaque is likely to rupture and hence lead to stroke. By identifying inflammation in vivo, positron emission tomography (PET) may be able to identify high risk plaques. This will allow clinicians to target intensive medical or surgical treatment to high risk patients.
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