主动脉夹层伴血栓形成患者的磁共振诊断  

MRI diagnosis of thrombosed aortic dissection

作　　者：杨家斐[1] 余新光[2] 马林[2] 胡淼淼 张毅军[1] 程流泉[2] 赵建秀[1] 刘宁[1] 盛春美[1] 

机构地区：[1]解放军总医院第一附属医院放射科,北京100037 [2]解放军总医院 [3]海淀医院放射科

出　　处：《中华老年心脑血管病杂志》2008年第4期260-262,共3页Chinese Journal of Geriatric Heart,Brain and Vessel Diseases

摘　　要：目的探讨主动脉夹层伴血栓形成患者的MRI影像特点。方法12例确诊为主动脉夹层伴血栓形成的患者,行快速小角度梯度回波T1WI、快速自旋回波T2WI、三维增强磁共振血管成像、心电门控真稳态进动快速成像及半傅立叶转换单次激发快速自旋回波扫描,观察主动脉夹层伴血栓形成在各序列的信号特点。结果急性期血栓在各序列为低信号或等信号;亚急性期血栓在各序列均为高信号;慢性期血栓在各序列为低信号或等信号。结论主动脉夹层伴血栓形成是主动脉夹层的一种特殊类型,应用MRI的多种序列组合可以增强我们对主动脉夹层伴血栓形成作出正确的诊断。Objective To explore the characteristics of MRI in thrombosed aortic dissection. Methods Twelve patients with thrombosed aortic dissection were studied. The characteristics of the thrombus signal during different periods on fast low angle gradient echo T1WI（FLASH）,turbo spin echo T2 WI,contrast-enhanced MRA, cardiac electrical gating three directions true fast imaging with steady state precession and half-fourier acquisition single-shot turbo spin-echo were observed. Results Acute thrombus showed signal iso- or hypo-intensity,subacute thrombus showed high intensity and chronic thrombus showed isoor hypo-intensity on all sequences. Conclusion The thrombosed aortic dissection is a special type of the aortic dissection. MRI can facilitate our comprehension and correct diagnosis of this disease with different sequences.

关 键 词：主动脉疾病 血栓形式 磁共振成像 主动脉夹层 

分 类 号：R543.1[医药卫生—心血管疾病]