Preoperative measurement of cerebrovascular reactivity using acetazolamide or CO2 induced SPECT is the gold standard for predicting cerebral hyperperfusion (CH) after carotid endarterectomy (CEA). However, it is often impractical to perform SPECT examinations on all patients.
Arterial spin labeling (ASL) is a non-invasive technique to image the brain perfusion. Based on multi-delay ASL perfusion map, we extracted two hemodynamic parameters (cerebral blood flow and arterial transit time) and established a five-scale scoring system for the prediction of CH.
We found in patients with carotid stenosis, multi-delay ASL is a practical and reliable tool for the prediction of CH after CEA.
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