【摘要】 目的 探讨3.0T MR成像对颈动脉斑块检出及定性的能力。方法 32例经超声筛选的颈动脉斑块病人,运用3.0T磁共振仪行多序列（3D-TOF、FLASH-3D、TSE-DIR T₁WI、TSE-DIR PDWI-FS、DIR TSE-T₂WI-FS、TSE-T₂WI）扫描,对颈动脉斑块行高分辨MRI成像,参照AHA修改的MRI动脉粥样硬化分型标准,分析斑块的信号特征。结果 32例共发现49个粥样斑块,其中30个斑块在所有序列上信号单一均匀;15个斑块在1个或多个序列上信号混杂,其中7个斑块含有脂质核心信号;3个斑块含钙化信号;2个表现为血管腔内血栓形成,管腔闭塞。28个斑块可见厚纤维帽信号;13个表现为薄纤维帽信号特征;5个斑块表面不光滑。结论 在3.0T MR仪上运用多序列高分辨成像可以检出颈动脉粥样硬化斑块,并在一定程度上可对其进行定性分析和定型。更多还原

【Abstract】 Objective To study the capability in detection and qualitative analysis of carotid atherosclerotic plaque with 3.0T MR scanner.Methods Bilateral carotid arteriae in thirty-two patients with arterosclerosis which detected by Doppler ultrasound were examined with a 3.0T MR scanner.The pulse sequences included 3D time of flight,FLASH-3D,TSE-DIR T₁WI,TSE-DIR PDWI-FS,DIR TSE-T₂WI-FS and TSE-T₂WI.According to AHA modified criteria of atherosclerosis typing,the signal characteristics of plaques were analysed.Results Carotid plaques were homogeneous signal intensity on all sequences in 30/49,heterogeneous signal intensity on at least one sequence in 15/49,among them,7 with lipid core,3/49 plaques contained calcification,2/49 appeared as thrombosis and resulting in vessel occulusion,28/49 plaques presented the character of thick fibrous cap,13/49 plaques showed character of thin fibrous cap,the surfaces of 5/49 plaques were rough.Conclusion High resolution multiple sequences imaging with 3.0T MR scanner can be used for detection and qualitative analysis of the carotid atherosclerotic plaque in a certain degree.更多还原