This study suggests that the 3DUS lung volume measurement is a good predictor of lethal pulmonary hypoplasia in fetuses with skeletal dysplasia, with high accuracy.
Electronic poster abstractsimage: 3D volume to 2D dicom images using DICOMatic (TomoVision).Step 2. Pre-processing: Gaussian filter for reducing the noise of 2D cross-section.Step 3. Iterative Binary method: applied different thresholds for each image in consideration of the characteristics of each section (2D image) to separate only the region of the fetus.Step 4. Post-processing: morphologic operation applied for segmentation of the meaningful area of the fetus.Step 5. Modeling and visualization: smoothing after surface rendering. 3D model was provided in the form of a stl file after completing all processing. Results: We applied these algorithms for 3D ultrasound volume data of fetal face and fetal heart between 19 and 29 completed gestational weeks. We successfully created 3D printing of fetal face and fetal heart with commercial 3D printer. Conclusions: Preliminary experiments indicate good results in image segmentation from 3D ultrasound data and 3D printing of fetus. It can be used for numerical analysis and creation of a physical model by 3D Printer.
P24.05Contribution of magnetic resonance imaging to ultrasound for the evaluation of fetal central nervous system anomalies
Electronic poster abstracts among these women was 47.06% (8/17) and there were no maternal death. The sensitivity, specify, positive and negative predictive value of ultrasound and color Doppler in diagnosis of morbidly adherent placenta previa were 82.3% (14/17), 96.7% (59/61), 87.5% (14/16), 95.2% (59/62), respectively. Conclusions: Ultrasound has a high accuracy for prenatal diagnosis of disorder of invasive placentation in high-risk women. The use of color Doppler improves the test performance. Placenta previa and previous uterine surgery represent the major factor risk for invasive placentation.
P25.10Importance of ultrasound examination in the prediction of severe postpartum hemorrhage
R. Pock
Institute for the Care of Mother and Child, Prague, Czech RepublicObjectives: Assessing the benefits of ultrasound examination in patients undergoing surgery for severe postpartum hemorrhage. Analysis of the causes of bleeding and its possible prediction. Methods: Retrospective cohort study running at a perinatal center.The group consists of women operated for severe postpartum hemorrhage during 2005-14.The surgical procedure was hysterectomy or hypogastric artery ligation.In the case of ongoing bleeding after ligation or adherent placenta, abdominal hysterectomy followed.Expert ultrasound was performed in all cases before surgery. Results: 95 women were operated for severe postpartum hemorrhage. The risk of postpartum hemorrhage was predicted ante-partum in 58%. It was a diagnosis of placenta praevia (19%), history of Caesarean section or other surgery on the uterus (19%). In 19% was diagnosed placenta praevia with a history of previous surgery on the uterus. This combination led to hysterectomy in 17 of 18 cases. The exact location of the placenta and quality evaluation of the lower uterine segment was based on ultrasound examination. Eight patients were operated for placental abruption and three for severe bleeding by residues after vaginal delivery. These diagnoses were based on ultrasound imaging too. Hypogastric artery ligation was performed in 87%, 75 times during the primary surgery, 8 times at reoperation. In 13% of all women hysterectomy was proceeded without ligation of the hypogastric arteries. In 50% the uterus was preserved. In 36% the hysterectomy was needed after the ligation for ongoing severe bleeding or adherent placenta. Conclusions: Ultrasound examination plays an important role in the diagnosis of postpartum hemorrhage. It is possible to determine high-risk group of pregnant women based on ultrasound examination and adapt peripartal management.
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