解读专家 张清华
医学博士,副主任医师,美国UCLA医学院访问学者,山东省立医院西院神经内科主任。中国卒中学会青年理事会理事;中国老年医学会神经科学专业委员会青委副主委;中国研究型医院学会神经科学专业委员会委员;山东省老年学学会常务理事兼神经科学专业委员会主委、康复委员会副主委;山东省医学会脑血管病分会委员;山东省医师协会临床细胞治疗委员会委员;山东省卒中学会出血性脑血管病委员会副主委。主要从事脑血管病、头痛、眩晕的科研与临床工作。曾获山东省科技进步奖三等奖1项,主持山东省自然科学基金及医药卫生科技发展计划,参与多项国家及省级课题,发表SCI论文及国内核心期刊论文多篇。
目前认为,动脉粥样硬化性疾病是后循环卒中的主要原因1,对于影响后循环的弥漫性动脉粥样硬化性疾病已有众多研究和报道。随着新的血管内治疗技术和设备的出现,针对后循环的治疗有了更多的选择和突破,迫切需要对后循环特别是基底动脉(basilar artery, BA)狭窄的发病机制进行更深入的研究2。
二、研究方法
Figure 2. Stroke mechanisms of ISBAS (infarction depicted in shadows). Schematic representation in the upper row and diffusion-weighted images depicting each stroke category in the lower row. (A.1) Deep pontine stroke secondary to an unstable plaque localised in the origin of a perforator. The stroke may occur due to decreased flow (a) or in situ thrombosis (b). (A.2) Midbrain stroke (arrow) due to occlusion of a BA perforator. (B.1) Flow-dependent/hypoperfusion stroke secondary to decreased blood flow in the mid and distal BA. The atherosclerotic plaque is located in the proximal segment. (B.2) Multiple strokes affecting the cerebellum, midbrain and thalami (arrows) in the setting of a flow-dependent high-grade stenosis. (C.1) Artery-to-artery thromboembolic occlusion of distal SCA and PCA branches secondary to a plaque rupture in the mid-basilar segment. (C.2) Thromboembolic strokes (arrows) in the left midbrain and right occipital lobe.
三、研究结果
四、研究结论及展望
参考文献
1. Caplan LR, Wityk RJ, Glass TA, et al. New England Medical Center Posterior Circulation registry. Ann Neurol 2004;56(3):389-98. doi: 10.1002/ana.20204 [published Online First: 2004/09/07]
2. Lee WJ, Jung KH, Ryu YJ, et al. Impact of stroke mechanism in acute basilar occlusion with reperfusion therapy. Ann Clin Transl Neurol 2018;5(3):357-68. doi: 10.1002/acn3.536 [published Online First: 2018/03/22]
3. Samaniego EA, Shaban A, Ortega-Gutierrez S, et al. Stroke mechanisms and outcomes of isolated symptomatic basilar artery stenosis. Stroke and Vascular Neurology 2019:svn-2019-000246. doi: 10.1136/svn-2019-000246
4. Derdeyn CP, Fiorella D, Lynn MJ, et al. Mechanisms of stroke after intracranial angioplasty and stenting in the SAMMPRIS trial. Neurosurgery 2013;72(5):777-95; discussion 95. doi: 10.1227/NEU.0b013e318286fdc8 [published Online First: 2013/01/19]
5. Jiang WJ, Yu W, Ma N, et al. High resolution MRI guided endovascular intervention of basilar artery disease. J Neurointerv Surg 2011;3(4):375-8. doi: 10.1136/jnis.2010.004291 [published Online First: 2011/10/13]
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