USG NTNB (Ultrasound NT and NB scan)

NTNB refers to an ultrasound scan during the first trimester of pregnancy, also known as a Nuchal Translucency (NT) scan and a Nasal Bone (NB) scan. This scan, typically performed between 11 and 13+6 weeks of pregnancy, is used to assess the risk of chromosomal abnormalities like Down syndrome. The scan measures the thickness of the nuchal translucency (fluid-filled space behind the baby's neck) and checks for the presence of a nasal bone, both of which can be indicators of potential chromosomal issues.