The clinical study The Efficacy of In-Phase and Quadrature Demodulation in Electronic Fetal Heart Rate Monitoring During Labor, facilitated with BMT F15 Series and its own IQ technology, showed significant improvement in reducing the incidences of fetal heart rate (FHR) doubling and halving when using electronic fetal heart rate monitoring (EFM) with in-phase and quadrature (IQ) demodulation.