Govindan Rathinaswamy B, Vairavan Srinivasan, Furdea Adrian, Murphy Pam, Preissl Hubert, Eswaran Hari
Department of Obstetrics and Gynecology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:4618-21. doi: 10.1109/IEMBS.2010.5626471.
We propose a novel approach based on Hilbert phase to identify the burst in the uterine myometrial activity. We apply this approach to 24 serial magnetomyographic signals recorded from four pregnant women using a 151 SQUID array system. The bursts identified with this approach are evaluated for duration and are correlated with the gestational age. In all four subjects, we find a decrease in the duration of burst as the subject approaches active labor. As was shown in animal studies, this result indicates a faster conduction time between the muscle cells which activate a larger number of muscle units in a synchronous manner.
我们提出了一种基于希尔伯特相位的新方法来识别子宫肌层活动中的爆发。我们将这种方法应用于使用151个超导量子干涉器件阵列系统从四名孕妇记录的24个连续磁肌电图信号。用这种方法识别出的爆发进行持续时间评估，并与孕周相关联。在所有四名受试者中，我们发现随着受试者接近活跃分娩，爆发持续时间缩短。正如在动物研究中所显示的，这一结果表明肌肉细胞之间的传导时间更快，从而以同步方式激活更多的肌肉单元。
