Research Article: Application of Copy Number Variation Sequencing Technology in Foetuses with Abnormal Ultrasound Soft Markers
Introduction:
Ultrasound soft markers refer to small nonspecific variations in foetal structure found in prenatal ultrasound that are often associated with abnormal chromosome number or pathogenic copy number variations (CNVs). , Common ultrasound soft markers include nuchal translucency (NT) thickness, nuchal fold (NF) thickness, nasal bone dysplasia, choroid plexus cyst, intracardiac strong echo focus, intestinal echo enhancement, renal pelvis dilatation, single umbilical artery and short long bones. , Clinically, the…
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