Fetal Viability scan:
This examination is done at 6-10 weeks and is used to determine the number of fetuses present, and the progress of the pregnancy.
The scan is usually conducted between 11-13 weeks of the pregnancy, to help:
- Accurately determine the date of pregnancy and expected date of delivery.
- Assess the risks of Down's Syndrome and other chromosomal abnormalities.
- Diagnose multiple pregnancy.
- Diagnose certain major fetal abnormalities.
- Diagnose early pregnancy failure.
This is a detailed scan between 19-23 weeks in which the focus is on:
- Position of the placenta.
- Amount of amniotic fluid present.
- Measurement of fetal growth, where special attention is paid to the brain, face, spine, heart, stomach, bowel, kidneys
A detailed examination of the fetal heart, conducted at 20-24 weeks, is especially recommended for :
- Women with a family history of heart abnormalities.
- Where increased nuchal translucency was found at the 12 week scan.
- Assessing the risk of Down's Syndrome.
Fetal Wellbeing scan:
The scan is conducted after 32 weeks of pregnancy. The aim is to determine the growth and health of the fetus by:
- Measurement of the size of the fetal head, abdomen and thigh bone, and calculation of an estimated fetal weight.
- Examination of the movements of the fetus.
- Evaluation of the placental position and appearance.
- Measurement of the amount of amniotic fluid.
- Assessment of blood flow to the placenta and fetus by Colour Doppler ultrasound.