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How is 3D ultrasound different from a normal scan?
In conventional 2D scanning the ultrasound image is made up of thick slices and only one slice can be seen at any one time. Although the image is very informative the picture viewed does not resemble the fetus. In 3D ultrasound a volume of echoes is taken which can be stored digitally and shaded to produce life-like pictures of the fetus.
What is 4D ultrasound?
The latest ultrasound technology adds the fourth dimension of time to a 3D image resulting in a moving 3D image of your unborn child.
What are the advantages of 3D/4D ultrasound?
Some parts of the baby's anatomy can be seen much more clearly than with 2D ultrasound, especially the face, arms, legs, fingers and toes. For example, cleft palate has been shown more clearly with 3D ultrasound.
In addition, activities of the baby inside the womb can be seen which are difficult or impossible to identify on 2D scanning. For example, with 4D scanning the fetus can be seen to yawn, cry, swallow, blink and perform intricate finger movements. The activities can be seen even in mid-pregnancy although they become more common as pregnancy advances.
Bonding between parents and baby has been shown to be stronger when the 3D image is compared to the 2D image because the picture of the baby is more realistic. Improved bonding has been shown to enhance the mothers care of herself and therefore her baby.
Will I always get a picture of the baby's face?
A picture of the baby's face is usually seen, but not always. Sometimes if the baby is persistently looking face down, i.e. towards your spine, it may be difficult to see the baby's face. If this happens, a repeat scan in one hour will usually succeed because the baby has turned to a favourable position.
How long will the appointment last?
Patients should allow about 45 minutes for the examination.
Could 3D/4D scanning be unsafe?
Extensive studies in ultrasound have shown that ultrasound does not cause any harm to the mother or baby. Indeed, routine scanning of all pregnancies now occurs throughout the whole of Europe. In 3D/4D scanning exactly the same type and intensity of ultrasound is used as with conventional scanning, 3D scanning in fact reduces the exposure since by storing the data on to a computer so that the baby's anatomy can be examined off line.
If I have a 3D scan do I need to have a conventional scan in my hospital?
Yes. It is very important that you go though the hospital routine so that no antenatal test is missed out. By having a 3D scan, you will have a professional, detailed scan of the baby's growth and anatomy.
What is the best time to have a 3D/4D scan?
Good pictures of your baby can be obtained throughout your pregnancy. By early pregnancy (12 weeks) you will see the whole baby moving its arms and legs, but details of the face are indistinct. Later in pregnancy (22-32 weeks) you will see clear images of your baby's features.
What if an unexpected abnormality is found?
Any abnormality found will be explained fully.
3D/4D scans are usually done between 25 and 32 weeks gestation. Mr Economides, Consultant in the Fetal Medicine Unit at the Royal Free Hospital conducts the scan himself.
PACK 1 - £100
- The baby is checked and measurements are taken. The presentation and weight of the baby are also assessed and you will receive a copy of the scan report at the end of the appointment.
- You will receive a 10-15 minute DVD recording (or let us know if you prefer a video)
- You will also receive 6 x 4 colour photographs and also black and white photographs.
- If you wish to know the fetal sex this is possible after 16 weeks gestation.
ALL SCANS ARE PAYABLE ON THE DAY BY CASH OR CHEQUE; NO CREDIT CARDS.
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