Anatomy<unk>  of the fetal head at 20 weeks of pregnancy in a fetus affected by spina bifida. In the axial<unk>  the characteristic lemon sign and banana sign are seen. Anatomy<unk>  with power bi-directional colour Doppler of both fetal kidneys at 18 weeks of pregnancy to detect renal agenesis. The videoclip shows a frontal<unk>  with normal renal blood perfusion during fetal breathing movements.Second-trimester ultrasound screening for aneuploidies, such as Edwards syndrome and Patau syndrome, are based on looking for soft markers and some predefined structural abnormalities. Soft markers are variations from normal anatomy, which are more common in aneuploid fetuses compared to euploid ones. These markers are often not clinically significant and do not cause adverse pregnancy outcomes. Placental evaluation is vital for planning method of delivery. Additionally, placental and umbilical cord abnormalities are also associated with certain fetal genetic abnormalities. +Conditions Identified During<unk>  Fetal Conditions Placental Conditions Maternal Conditions * Anencephaly * Cleft lip * Diaphragmatic hernia * Gastrochisis * Omphalocele * Congenital heart defect * Renal agenesis * Spina bifida * Osteochondrodysplasia * Edwards syndrome * Patau syndrome * Placenta previa * Vasa previa * Placenta accreta * 2 vessel cord * Succenturiate lobe * Circumvallate placenta * Velamentous cord insertion * Ovarian masses * Congenital uterine<unk> es * Uterine septum * Bicornuate uterus * Uterine Leiomyoma * Short cervix Sex determination Fetal sex is often noted during the<unk> , but can also be detected during the quad<unk> . However, performing an ultrasound for the sole purpose of determining fetal sex without a medical indication is not recommended. Limitations Although ultrasound is a useful screening tool for fetal<unk> es, the sensitivity of this<unk>  is highly variable and potentially detects only 40% of all fetal<unk> es. The ability of this<unk>  to detect structural fetal abnormalities depends on a variety of factors. These factors include the severity of the<unk> , the background risk of the study population, gestational age at time of<unk> , the expertise of the ultrasound technician and interpreting obstetrician, and maternal obesity.
Anomaly scan
Milan criteria
Partogram
EConsult
Triple test score
ABCD rating
EXIT procedure
Milch classification