OBJECTIVE: The purpose of this study was to examine the feasibility of recording the spatial-temporal magnetomyographic activity from the pregnant uterus with the use of the newly developed 151-channel noninvasive device, known as the superconducting quantum interference device array for reproductive assessment. STUDY DESIGN: Uterine magnetomyographic signals were recorded from 10 pregnant subjects with the 151-channel sensor array curved to fit the pregnant abdomen. The recording sessions were 16 minutes in length, with a sampling rate of 250 Hz. RESULTS: Uterine activity bursts were successfully recorded with the superconducting quantum interference device array for reproductive assessment system. By obtaining a contour plot of the magnetic field distribution, we were able to localize the areas of activation over the uterus during a contraction. Also, it was possible to calculate the time delay in the propagation of the activity across the uterus. CONCLUSION: Using superconducting quantum interference device array for reproductive assessment system, we have established the feasibility of recording uterine contractile activity with spatial-temporal resolution that is high enough to determine the regions of localized activation and propagation over the uterus.
OBJECTIVE: The purpose of this study was to examine the feasibility of recording the spatial-temporal magnetomyographic activity from the pregnant uterus with the use of the newly developed 151-channel noninvasive device, known as the superconducting quantum interference device array for reproductive assessment. STUDY DESIGN: Uterine magnetomyographic signals were recorded from 10 pregnant subjects with the 151-channel sensor array curved to fit the pregnant abdomen. The recording sessions were 16 minutes in length, with a sampling rate of 250 Hz. RESULTS: Uterine activity bursts were successfully recorded with the superconducting quantum interference device array for reproductive assessment system. By obtaining a contour plot of the magnetic field distribution, we were able to localize the areas of activation over the uterus during a contraction. Also, it was possible to calculate the time delay in the propagation of the activity across the uterus. CONCLUSION: Using superconducting quantum interference device array for reproductive assessment system, we have established the feasibility of recording uterine contractile activity with spatial-temporal resolution that is high enough to determine the regions of localized activation and propagation over the uterus.
Authors: Rathinaswamy B Govindan; Srinivasan Vairavan; Adrian Furdea; Pam Murphy; Hubert Preissl; Hari Eswaran Journal: Annu Int Conf IEEE Eng Med Biol Soc Date: 2010
Authors: Michael F Robuck; Christine M O'Brien; Kelsi M Knapp; Sheila D Shay; James D West; J M Newton; James C Slaughter; Bibhash C Paria; Jeff Reese; Jennifer L Herington Journal: Reproduction Date: 2018-03-02 Impact factor: 3.906
Authors: R B Govindan; S Vairavan; J D Wilson; H Preissl; J Vrba; C L Lowery; H Eswaran Journal: Phys Rev E Stat Nonlin Soft Matter Phys Date: 2009-10-23
Authors: Rathinaswamy B Govindan; Srinivasan Vairavan; Naim Haddad; James D Wilson; Hubert Preissl; Hari Eswaran Journal: Conf Proc IEEE Eng Med Biol Soc Date: 2009