Carotid Artery Plaque Clinical Trial
Official title:
Vascular Surgery Department of Beijing Tsinghua Chang Gung Hospital
OBJECTIVE/BACKGROUND: Intraplaque neovascularization is one of the most important risk factors for unstable carotid plaque. This study was designed to evaluate whether carotid intraplaque neovascularization (IPN) can be accurately assessed by contrast enhanced ultrasound (CEUS). METHODS: Preoperative CEUS analysis of 50 carotid artery stenosis patients would be compared to histopathology performed on their plaques excised by carotid endarterectomy (CEA) with CD34 and MMP9 staining.
1. To enroll 50 cases of patients suffering from carotid artery stenosis continuously, the investigators perform contrast enhanced ultrasound on patients for identifying the vulnerable plagues and taking high resolution MR inspection to analysis those plagues at the same time. 2. All patients undergo carotid endarterectomy. The vulnerable ingredients of carotid plaques such as intraplaque neovascularization and bleeding are identified by pathological examination and immunohistochemical staining. 3. To evaluate the accuracy of CEUS for identifying carotid vulnerable plague compared with high resolution MR. 4. The investigators divide patients into the stable group and the vulnerable group based on the results of CEUS inspection. To analysis the incidence of postoperative complications such as stroke and mortality within 30 days and to compare the differences between the two groups. ;
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