Performance of myocardial 2D strain analysis by wall-motion tracking was feasible with 30 and 60 fps. Obtained global and segmental LPSS values of both ventricles were relatively independent from acquisition rate.

Objective The primary objective of this study was to determine the feasibility and reproducibility of 2-dimensional speckle tracking imaging based on the wall motion tracking (WMT) technique in fetal echocardiography. The secondary objective was to compare left and right ventricular global and segmental longitudinal peak strain values. Methods A prospective cross-sectional study was performed. Global and segmental longitudinal peak strain values of the left ventricle (LV) and right ventricle (RV) were assessed prospectively. Based on apical 4-chamber views, cine loops were acquired and digitally stored. Strain analysis was performed offline. Intra- and interobserver variabilities were analyzed. Results A total of 29 healthy fetuses with an echocardiogram performed between 19 and 37 weeks of gestation were included. Analysis was performed with a temporal resolution of 60 frames per second (fps). For both examiners, in all cases Cronbach?s alpha was>0.7. The interobserver variability showed a strong agreement in 50% of the segments (ICC 0.71?0.90). The global strain values for LV and RV were ?16.34 and ?14.65%, respectively. Segmental strain analysis revealed a basis to apex gradient with the lowest strain values in basal segments and the highest strain values in apical segments. Conclusion The assessment of fetal myocardial deformation parameters by 2D WMT is technically feasible with good reproducibility.

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Objectives: To determine correlation between macroscopic appearances of superficial endometriotic lesions noted at laparoscopy and the final histopathology diagnosis. Methods: A prospective cohort study involving consecutive women with chronic pelvic pain who underwent laparoscopy between January 2015 -December 2016. The laparoscopic findings were recorded in terms of location, number and morphological description (i.e. red spot, white spot, pocket and/or fibrous adhesion) of the endometriotic lesions. These findings were correlated with the final histopathological diagnosis. All endometriotic lesions were excised at the time of laparoscopy. Results: A total of 77 consecutive women underwent laparoscopy. 9/77 were noted to have deep infiltrating endometriosis with bowel involvement and were excluded. 4/77 had a negative laparoscopy with normal pelvis. 64/77 had visualised lesions suspicious of superficial endometriosis. The mean age of the women was 27.7±7.7 y, 37% were nulliparous, 27.5% had previous history of endometriosis. A total of 180 biopsies were collected .The description of lesion were: red spots74/180, white spot 87/180, peritoneal pocket 11/180 and adhesions 8/180. Overall histopathological confirmation rate for endometriosis was 56%.There was no correlation between lesion distribution, morphology and positive diagnosis of endometriosis (p-value=0.8). These parameters were not statistically different in the presence of past history of endometriosis (p-value=0.19). Conclusions: Although the numbers in this study are small, there is no correlation between the macroscopic appearance of superficial endometriosis lesions and gold standard histological confirmation. P19: FETAL ECHOCARDIOGRAPHY II P19.01Application of different frame rates in two-dimensional speckle-tracking in fetal echocardiography and their influence on strain analysis Objectives: Frame rates (FR) used for strain analysis assessed by speckle tracking in fetal echocardiography show a huge variation. Due to high fetal heart rates, appropriate high FR are requested for application in the fetus. The aim of this study was to investigate the influence of the FR on strain analysis in two-dimensional (2D) speckle tracking. Methods: A prospective cross-sectional study was performed. Based on an apical or basal four-chamber view of the fetal heart, cine loops were acquired on a Toshiba Aplio 500 system. Each loop was digitally stored twice: firstly as a DICOM (digital imaging and communications in medicine) file with a FR of 60 frames per second (fps), secondly with the original FR (acoustic FR = AFR). For each loop, fetal global longitudinal peak systolic strain (LPSS) values of both, left (LV) and right ventricle (RV), were assessed by 2D Wall Motion tracking. Results: A total of n=48 healthy fetuses were included. Mean gestational age was 26.5 ± 5.5 weeks. The AFR was 129 ± 23 fps. Relating to global LPSS values of both ventricles, there was a significant difference between DICOM FR and AFR (LV: -17.3% ± 3.6% (DICOM FR) vs. -15.0% ± 3.1% (AFR)...

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