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Title:: Gradient echo cine-MRI observation of the diseases in heart and large vessels

Author(s):: HAN Yue-dong ; LIU Yan-li; ZHAO Hai-tao; Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi 710032, China

摘要:: 目的了解梯度回波电影磁共振(cine-MRI) 诊断心血管疾病的价值。方法分析38例心血管疾病的cine-MRI 解剖结构和血流动力学改变, 其中升主动脉瘤(AAA ) 10 例, 夹层动脉瘤(AD) 21 例, 心包血肿(PCH) 1 例, 肥厚型心肌病(HCM ) 3 例, 房间隔缺损(ASD) 2 例,ASD 并发室间隔缺损(VSD) 1 例。结果 cine-MRI 上心血管壁呈中低信号。AAA 和AD 主动脉增宽,AAA 和4 例AD 左心室扩大, 左室流出道有舒张期低信号区。18 例AD 内膜破裂口区有局部低信号区, 6 例假腔内血栓, 后者信号强度与心动周期无关。PCH 右侧房室受压变形。HCM 心肌增厚。ASD 和ASD 并发VSD 有左向右单向分流。结论 cine-MRI 可较好地显示心血管疾病的解剖结构和血流动力学改变, 与自旋回波序列结合可满足诊断需要。

Abstract:: AIM To find out the value of cine-MRI in diagnosing the diseases of heart and large vessles.METHODS the anatomic configurations and hemodynamics of 38 cases on cine-MRI were analysed,including ascending aortic aneurism(10 cases),aortic dissection(21 cases),pericardial hematoma(1 case),hypertrophic cardiomyopathy(3 cases),ASD(1 case),combined ASD and VSD(1 case).RESULTS The walls of the heart and large vessels presented as low~intermediate signal intensity.The diameter of the aorta in AAA and AD markedly increased accompanied by the enlarged left ventricle(LV) and low signal in some of their outflows. The membrane rupture and artificial cavity were found in 18 cases of AD with thrombus in 5 of them in which the signal intensity have no relationship with the heart movement. The areas of low signal in the enlarged LV were found in AAA(10 cases) and AD(4cases). The right atrium and ventricle(RAV) was displaced in PCH. The thickened walls occurred in HCM. The RAV enlarged in ASD as well as combined ASD and VSD accompanied by unilateral shunt through the local defects.CONCLUSION The anatomic configurations and hemodynamics of the heart and large vessels could be clearly demonstrated by cine-MRI,it would be sufficient to give the diagnosis if the cine-MRI combined with the SE sequence.