Amniocentesis is a more invasive test that carries a higher risk of complications than blood tests or ultrasonography, but is able to determine more precisely the presence of certain birth defects.
Ultrasonography, computed tomography scans (CT scan), and magnetic resonance imaging (MRI) may provide visual confirmation of a diagnosis or help to determine the extent of involvement.
Diagnostics and Routine Testing explains the latest tests for antibody, antigen, and how to use diagnostic tools such as radiology and ultrasonography.
Between ten and 14 weeks of gestation, ultrasonography may be used to measure a small collection of fluid beneath the skin at the back of the neck.
Potential tests include maternal serum alpha-fetal protein analysis or screening, ultrasonography, amniocentesis, and chorionic villus sampling.
Ultrasonography (ultrasound) is also routinely used to evaluate the fetus before birth and in the period shortly after birth.
The site and the extent of coarctation may also be detected using color-flow Doppler ultrasonography (echocardiology).
Tests such as amniocentesis and ultrasonography can determine whether a fetus is developing normally in the womb.
Ultrasonography is a diagnostic procedure in which ultrasonic waves are used to visualize internal organs.
Diaphragmatic hernia may be diagnosed while the fetus is still in the womb using prenatal ultrasonography.