Increased fetal nuchal translucency measured in the first trimester is associated with an
elevated frequency of chromosomal abnormalities, yet no reference intervals for …

Screening for fetal aneuploidy is now possible during the first trimester using sonographic
and biochemical markers. The aim of this review was to summarize the efficacy and use of …

Objective To assess the effect of imaging angle and fetal presentation on the measurement
of nuchal skin fold thickness (NFT) in the second trimester. Methods Fetal NFT was …

目的探讨早孕期胎儿颈项透明层(nuchaltranslucency, NT) 增厚和鼻骨异常在诊断胎儿染色体
异常中的价值. 方法取头臀长在45~ 84mm 的胎儿的正中矢状切面, 测量胎儿NT …

• Noninvasive screening tests for the common autosomal trisomies should be offered at any
age, providing patient-specific aneuploidy risks. First-trimester screening using serum …

Purpose To evaluate the value of fetal nasal bone hypoplasia and other prenatal risk factors
in predicting chromosomal abnormalities. Methods In this retrospective cohort study, we …

All patients have a 2% to 3% risk of birth defects, regardless of their prior history, family
history, maternal age, or lifestyle [1]. Chromosome abnormalities account for approximately …

This study summarizes 24 000 transvaginal ultrasound examinations which were performed
in a predominantly low‐risk population at 14–16 weeks' gestation. 1254 (5· 2 per cent) …

The goal of screening both low and high risk obstetric populations for chromosomally
abnormal fetuses continues to be developed in many centers worldwide. Advances in the …

Objective To analyze variables affecting the differences between on‐to‐on and on‐to‐out
methods of nuchal translucency measurement. Design Prospective comparison of two …