The primary objective of this study is to evaluate the vulnerability of intracranial and extracranial atherosclerotic plaques using HR-VWI, OCT, and RWS technologies, while exploring correlations among these three imaging techniques. Secondary objectives include: 1) Investigating the relationship between RWS and plaque progression and identifying optimal RWS predictors; 2) Further evaluating the clinical value of RWS and HR-VWI in stroke prediction through two-year clinical and HR-VWI follow-up evaluations.