"magnification so that only the fetal head and upper thorax are included in the image: allowing for 0.1 mm changes in measurement."
""
"miscarriage or fetal demise: the risk is directly proportionate to increased nuchal translucency thickness and ranges from 1.6% with NT between 95-99th percentile to 20% with NT >6.5 mm 11"
"miscarriage or fetal demise: the risk is directly proportionate to increased nuchal translucency thickness and ranges from 1.6% with NT between 95-99th percentile to 20% with NT >6.5 mm 11"
"intrauterine infections: parvovirus B19 is the only specific pathogen with direct relation to increased NT due to the effect of fetal anaemia and fetal myocardial infarction"
"Increased NT is considered when it measures >95th percentile for a given crown rump length (CRL) 14. The rate of aneuploidy is directly proportional to the value of nuchal translucency 9:"
"maternal B-HCG"
"If abnormal NT and screening test results show an increased risk of less than 1 in 300, further workup may be carried out based on the patient's desire after counselling. Further investigations include:"
"normal outcome: the change is proportionate to NT value 12"
"miscarriage or fetal demise: the risk is directly proportionate to increased nuchal translucency thickness and ranges from 1.6% with NT between 95-99th percentile to 20% with NT >6.5 mm 11"
"the callipers are placed inside the hyperechoic edges"
Expected headings
"Associations"
"Technique"
"Assessment"
"Interpretation"
"Correlation with serum markers"
"Further workup"
"External links"
"the fetus must be in the midsagittal imaging plane (the vertebral column should be facing the bottom of the screen); the following structures must be seen to confirm the correct mid-sagittal position:"
"the fetus should be floating free of the uterine wall i.e. amniotic fluid should be seen between its back and the uterus; this is to not mistakenly measure the distance to the amniotic membrane or uterine wall"