P26.02: Objective assessment of uterine peristalsis outside pregnancy by high‐order texture analysis of ultrasound images

Uterine Peristalsis (UP) plays a fundamental role in fertilisation. UP outside pregnancy can be evaluated by visual inspection of transvaginal ultrasound (TVUS); however, this procedure is subjective and unsuitable for UP quantification. High-order texture US image analysis has proven effective in the investigation of muscle structure. In particular, Gray Level Non-Uniformity (GLNU) computed on a Region Of Interest (ROI) defines texture absolute coarseness. In this pilot study, we propose a novel approach for the quantification of texture dynamic changes in uterine contracting areas during different phases of the menstrual cycle. Three healthy patients underwent 4 minutes-TVUS examination during active (periovulation) and inactive (Ovulation + 7 days) phases. We compute the GLNU on two ROIs (Dorsal and Ventral), placed in correspondence of the adopted visual inspection line (figure 1). Root-mean-square (RMS) and signal time-delays were computed to quantify UP amplitude and propagation speed, respectively. For the three patients, the average RMS of GLNU signals were 13.10 ± 12.83 a.u. for and 4.90 ± 3.05 a.u. for the active and inactive phases, respectively. Average UP propagation speeds were computed in both directions (DV = Dorsal-Ventral, VD = Ventral-Dorsal) in active (DV: 1.48 ± 1.13 mm/s, VD: 0.82 ± 0.10 mm/s) and inactive phase (DV: 1.00 ± 0.35 mm/s, VD: 0.81 ± 0.13 mm/s). Good qualitative agreement between time-delay onset and visual inspection observations was observed in active phase. Supporting information can be found in the online version of this abstract Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.

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