Spraggins T A
Siemens Medical Engineering Group, Erlangen, FRG.
Magn Reson Imaging. 1990;8(6):675-81. doi: 10.1016/0730-725x(90)90001-i.
A new "wireless" method of cardiac imaging is introduced, which, unlike ECG triggering, allows imaging the heart at end-diastole, and greatly reduces smearing artifacts in the phase-encoding direction. It is an improvement over ECG-driven retrospective gating, in that patients with poor ECGs can be imaged. This method extends the applicability of cardiac imaging, and since it requires no physiological monitoring hardware, can be implemented easily on any MR imager. The images produced by this method are superior to those from ECG triggering, especially when viewed in a "cine" loop. The technique described herein is, furthermore, extendable to any area where periodic or quasi-periodic motion is a problem.
一种新的心脏成像“无线”方法被引入，与心电图触发不同，它允许在舒张末期对心脏进行成像，并大大减少了相位编码方向上的模糊伪影。与心电图驱动的回顾性门控相比，它是一种改进，因为心电图不佳的患者也可以成像。这种方法扩展了心脏成像的适用性，并且由于它不需要生理监测硬件，所以可以在任何磁共振成像仪上轻松实现。这种方法产生的图像优于心电图触发产生的图像，特别是在以“电影”循环查看时。此外，本文所述技术可扩展到任何存在周期性或准周期性运动问题的区域。
