Sonographic Detection of Abnormal Plaque Motion of the Carotid Artery: Its Usefulness in Diagnosing High-Risk Lesions Ranging from Plaque Rupture to Ulcer Formation

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• 作者：Mutsuko Muraki^&lowast ; ; Taisei Mikami^&dagger ; ; ^{mikami@hs.hokudai.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Tetsuyuki Yoshimoto^&Dagger ; ; Shin Fujimoto^&Dagger ; ; Mayumi Kitaguchi^&lowast ; ; Sanae Kaga^&dagger ; ; Tomoko Sugawara^§ ; ; Kouichi Tokuda^&Dagger ; ; Sadao Kaneko^&Dagger ; ; Takeshi Kashiwaba^&Dagger ;
• 关键词：Carotid artery sonography ; Abnormal plaque motion ; Plaque rupture ; Plaque ulcer
• 刊名：Ultrasound in Medicine & Biology
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：42
• 期：2
• 页码：358-364
• 全文大小：761 K

文摘

We investigated the feasibility of using sonography of abnormal plaque motion to diagnose high-risk carotid lesions ranging from plaque rupture to ulcer formation. Fifty consecutive carotid arteries of 49 patients (71 ± 7 y, 37 males) who underwent carotid endarterectomy were investigated by carotid sonography to find a plaque concavity (sonographic ulcer [SU]), fine trembling motion inside the plaque (FTMI) and systolic retractive motion of the plaque surface (SRMS). Plaque rupture or ulcer, necrotic core and intra-plaque hemorrhage were determined at carotid endarterectomy. Twenty-two SUs, 41 cases of FTMI and 20 cases of SRMS were detected by carotid sonography. The sensitivity and specificity of SU in diagnosing plaque rupture or ulcer at carotid endarterectomy were 48% and 90%, and those of FTMI were 93% and 60%. Plaques with SRMS more frequently had both a necrotic core and intra-plaque hemorrhage than those without SRMS (80% vs. 30%, p = 0.0005). Abnormal plaque motion detected by carotid sonography is useful in detecting a ruptured or ulcerated plaque with a necrotic core and/or hemorrhage.