Figure 2.

Uterine peristalsis imaging in one participant with regular menstrual cycles during four phases of the menstrual cycle. (A) Dominant Fundus-Cervix uterine peristalsis pattern during the menses phase; (B) Fundus-Cervix pattern during the proliferative phase; (C, D) Dominant Cervix-Fundus uterine peristalsis patterns during the (C) peri-ovulatory phase and (D) secretory phase; (E) Pie charts showing the uterine peristalsis direction distribution in each phase; (F) Bar graph of uterine peristalsis frequency (waves/min); (G,H,I) Boxplots of uterine peristalsis duration (downsampled to 1 Hz, seconds), magnitude (mV), and power (mV*sec) for all peristalsis waves in each phase (each dot represents one uterine peristalsis wave). In the UPI activation sequences and isochrone maps, the white asterisks indicate the peristalsis wave initiation sites, and the white arrows indicate the propagation directions. *P <0.05