Seismocardiography and 4D flow MRI reveal impact of aortic valve replacement on chest acceleration and aortic hemodynamics.
Seismocardiography and 4D flow MRI reveal impact of aortic valve replacement on chest acceleration and aortic hemodynamics.
复制标题
地震心动图和 4D 血流 MRI 揭示了主动脉瓣置换术对胸部加速度和主动脉血流动力学的影响。
DOI：
10.1111/jocs.14289
复制
发表时间：
2020
影响因子：
1.6
通讯作者：
Barker,AlexJ
中科院分区：
文献类型：
--
作者：
Johnson,EthanMI;Etemadi,Mozziyar;Malaisrie,SChris;McCarthy,PatrickM;Markl,Michael;Barker,AlexJ
主动脉瓣置换术（AVR）是严重主动脉瓣疾病的常见治疗方法，它会对主动脉的血流产生不利影响。地震心动图 (SCG) 测量胸部外部的物理振动，这对心脏功能和血流动力学的改变很敏感。磁共振成像 (MRI) 可以对血液运动进行成像，并且可以提供主动脉血流的描述和量化。在这里，我们展示了一名患有二叶式主动脉瓣疾病和升主动脉扩张的女性在 AVR 和升主动脉置换术前后的 SCG 和 MRI 测量结果。 SCG 测量显示收缩期能量升高，表明手术前血流狭窄，而更换人工瓣膜后收缩期能量水平降低。 MRI 显示手术前的喷射、螺旋流和手术后的粘性流。
Aortic valve replacement (AVR) is a common treatment for severe aortic valve disease, which can adversely affect blood flow in the aorta. Seismocardiography (SCG) measures physical vibrations at the exterior of the chest, which can be sensitive to altered cardiac function and flow dynamics. Magnetic resonance imaging (MRI) can image blood movement, and it can provide depiction and quantification of aortic flow. Here we present SCG and MRI measurements from before and after AVR and ascending aorta replacement, in the case of a woman with bicuspid aortic valve disease and a dilated ascending aorta. SCG measurements show elevated energy during systole indicating stenotic flow before surgery and lowered systolic energy levels after replacement with a prosthetic valve. MRI shows jetting, helical flow before surgery, and cohesive flow after.