Fig. 1: The pipeline of the human EMMI system.
From: Noninvasive electromyometrial imaging of human uterine maturation during term labor
a An MRI scan is performed while the subject is wearing up to 24 MRI patches containing up to 192 markers. b An optical 3D scan of the body surface is performed while the subject is wearing electrode patches in the corresponding positions as the MRI patches. c Body surface electromyograms are simultaneously recorded from up to 192 pin-type unipolar electrodes assembled as patches. EMMI generates d, a body-uterus geometry from MR images with electrode locations on the body surface and, e a body surface potential map by rendering the electromyograms at each electrode at an instant in time on the body surface. EMMI combines the two data sets to reconstruct f uterine surface potential maps (electrical activity across the uterus at a single time point). With the potential maps, we can generate the electrograms g electrical waveforms over time at each uterine site, and then derive h, the uterine region, and chronological sequence of electrical activation visualized as isochrone maps in 3D. 3D three-dimensional, MRI magnetic resonance imaging, EMMI electromyometrial imaging.
