METHODS: Seven pregnant women with uncomplicated pregnancies underwent fMCG at 26-36 weeks\' gestation. The recordings were made using an OPM-based fMCG system and a person-sized magnetic shield. The shield is much smaller than a shielded room and provides easy access with a large opening that allows the pregnant woman to lie comfortably in a prone position.
RESULTS: The data show no significant loss of quality compared to data acquired in a shielded room. Measurements of standard cardiac time intervals yielded the following results: PR = 104 ± 6 ms, QRS = 52.6 ± 1.5 ms, and QTc = 387 ± 19 ms. These results are compatible with those from prior studies performed using superconducting quantum interference device (SQUID) fMCG systems.
CONCLUSIONS: To our knowledge, this is the first European fMCG device with OPM technology commissioned for basic research in a pediatric cardiology unit. We demonstrated a patient-friendly, comfortable, and open fMCG system. The data yielded consistent cardiac intervals, measured from time-averaged waveforms, compatible with published SQUID and OPM data. This is an important step toward making the method widely accessible.
方法:7名无并发症妊娠的孕妇在妊娠26-36周时接受了fMCG。使用基于OPM的fMCG系统和人大小的磁屏蔽进行记录。防护罩比屏蔽室小得多,并提供了一个大开口,使孕妇可以舒适地躺在俯卧位的方便。
结果:数据显示,与在屏蔽室中获取的数据相比,质量没有显着损失。标准心脏时间间隔的测量得出以下结果:PR=104±6ms,QRS=52.6±1.5ms,QTc=387±19ms。这些结果与使用超导量子干涉器件(SQUID)fMCG系统进行的先前研究的结果兼容。
结论:据我们所知,这是欧洲首个具有OPM技术的fMCG设备,委托儿科心脏病学部门进行基础研究。我们展示了一个对病人友好的,舒适,和开放的快速消费品系统。数据产生了一致的心脏间隔,从时间平均波形测量,与发布的SQUID和OPM数据兼容。这是使该方法广泛使用的重要步骤。