Felblinger J, Lehmann C, Boesch C
MR Center, University and Inselspital, Berne, Switzerland.
Magn Reson Med. 1994 Oct;32(4):523-9. doi: 10.1002/mrm.1910320416.
We have developed a method for measuring the electrocardiogram (ECG) continuously during MR examinations. In contrast to ECG acquisition by wires, our new method is to amplify and convert the ECG into an optical signal directly above the patient's heart. The optical signal is transmitted out of the magnet bore by optical fiber. The small and fixed dimensions of the ECG amplifier avoid interactions with the MR system because of shorter electrical structures and smaller enclosed areas. Tests of the proposed device in a 1.5 Tesla MR system show that continuous and reliable ECG monitoring and sequence triggering are possible.
我们开发了一种在磁共振成像（MR）检查期间连续测量心电图（ECG）的方法。与通过导线采集心电图不同，我们的新方法是在患者心脏正上方将心电图直接放大并转换为光信号。光信号通过光纤传输出磁体孔。心电图放大器尺寸小且固定，由于电气结构较短和封闭区域较小，避免了与MR系统的相互作用。在1.5特斯拉MR系统中对该装置进行的测试表明，连续可靠的心电图监测和序列触发是可行的。
