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OC14.01: Prenatal neurodevelopmental outcome prediction using a novel MR‐based scoring system in isolated callosal agenesis

only Doppler blood flow measurement but also advanced VCI with OmniView and 3D colour Doppler. Methods: 12 refractory cervical incompetence patients underwent modified LC. We assessed temporary and chronological changes in fetomaternal circulation. Regarding temporary changes, we confirmed that the uterus and fetus were not ischemic and that the thread was placed at an ideal position using ultrasound guidance. Regarding chronological changes, we assessed the knot and fetomaternal circulation using Advanced VCI with OmniView, 3D colour Doppler, and measured UA-PI, UmA-PI, DV-PI, MCA-PI, -PSV, CPR and cervical length every 2 weeks until delivery. Results: Before and after procedure, there are no changes in UA-PI, -PSV, and fetal heart rate. In all cases, amount of amniotic fluid, EFW, and all blood flow measurements remained within the normal ranges throughout the gestational period. There was no deterioration of the stitches and no vasodilation, absent or reversed blood flow of uterine vessel. The length of the cervix did not change until delivery. Eight cases were born at term (37 + 0 to 38 + 6), and one case was born at 22+0 weeks’ gestation. Three cases are currently pregnant. Conclusions: It was suggested that modified LC, in which the sutures placed lateral to the uterine vessels, has no serious adverse effect on feto-maternal circulation.