OP03.03: 3D‐TVS criteria to diagnose t‐shaped uterus

To evaluate the lateral and the anteroposterior uterine wall thickness and their ratio by 3D-TVS in fertile women with an ESHRE - ESGE normal (class U0), T-shaped (class U1a) and septate uterus (class U2). Consecutive fertile patients with T-shaped and septate uterus, without myomas and/or adenomyosis, were recruited and compared to a control group (normal uterus). 3D-TVS was performed with the GE Voluson E8 unit, using a wide-band 3-9 MHz transducer. Compound Resolution Imaging (CRI) and Speckle Reduction Imaging (SRI) technologies were used to optimise image before volume acquisition by enhancing contrast resolution and reducing artefacts and speckle. Volume Contrast Imaging (VCI) analysis (by two millimetres slices) of the stored 3D multiplanar examination was considered for the evaluation of the lateral, anterior and posterior uterine wall thickness on the sagittal and coronal planes. The uterine wall thickness was measured at its thickest in the orthogonal planes. 56, 42 and 42 class U0, U1a and U2 patients were enrolled, respectively. Mean age was 35 years (SD ±7). Mean lateral uterine wall thickness was significantly thicker in the T-shaped compared to the normal and the septate groups (19.1±2mm, 13.1±1.6mm and 12.4±1.7mm, respectively). Mean anteroposterior uterine wall thickness was significantly different in the three groups (normal: 12.8±1.7mm; T-shaped: 13.9±2.3mm; septate: 11.2±1.3mm). Mean lateral/anteroposterior uterine wall thickness ratio was significantly different in the three groups (normal: 1.03±0.1mm; T-shaped: 1.42±0.2mm; septate: 1.1±0.2mm). 3D-TVS by VCI analysis can permit to properly evaluate the lateral and the anteroposterior uterine wall thickness in the three orthogonal planes. The lateral uterine wall thickness >17mm and the lateral/anteroposterior uterine wall thickness ratio >1.4 should be considered proper criteria to diagnose T-shaped uterus.