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磁共振检查是当今心血管系统现代影像学技术,其应用体外的巨大磁场及磁共振脉冲序列,使体内器官与组织的成分:氢原子核或质子沿外周磁场方向做线性排列,并随磁场消失这些粒子从线性位置释放出来,产生的MRI信号能被外部接受线圈接收,图像重建而成图。与CT相比,MRI有较高的时间分辨率。钆是MRI检查时应用的造影剂,毒性低于碘造影剂。其弹丸式推注人体后,先进行心肌灌注评估,即首次通过增强测量。钆在正常心肌内其可迅速分布和
Magnetic resonance imaging is the modern imaging technology of cardiovascular system. It uses huge magnetic field and magnetic resonance pulse sequence in vitro, which make the composition of the organs and tissues in the body: hydrogen nuclei or protons linearly arranged along the peripheral magnetic field and disappear with the magnetic field The particles are released from the linear position, and the resulting MRI signal can be received by an external coil to reconstruct the image. Compared with CT, MRI has a higher temporal resolution. Gadolinium is a contrast agent for MRI and less toxic than iodine contrast. After bolus injection of the human body, the first myocardial perfusion assessment, that is, for the first time by enhancing the measurement. Gd can be rapidly distributed in normal myocardium