FAQs Pregnancy scans

Pregnancy scans

Is it possible to determine the exact date I conceived?

No. Ultrasound is only accurate to within a few days either side of conception. However, the earlier in pregnancy you have the scan the more accurate it is.

How early is it possible to tell the sex of my baby?

This is possible from approximately 13 weeks but we recommend waiting until you are around 17 weeks because it is more accurate.

Are all abnormalities seen on every scan?

No. As your baby grows and develops more can be seen but some abnormalities or potential problems do not become apparent until later in pregnancy.

Can you tell how much my baby will weigh at birth?

An estimate of your baby’s weight can be given but because all babies grow at different rates in the last few weeks this is never 100% accurate.

Is a 3D/4D scan better for diagnosing problems than 2D images?

No. 3D / 4D images allow us to look at the outside of your baby which is why we can get detailed pictures of your baby’s face and limbs. 2D Ultrasound allows us to look at the internal organs and structures so is better for diagnosis purposes.

Will you tell me if there is anything wrong?

Yes. Every scan is performed by an experienced sonographer who has a duty of care towards you and your baby. All our scans are considered diagnostic, you will be given a report to include in your pregnancy notes and your sonographer will discuss/explain any problems at the time of your scan.

When is the best time to have a 3D or 4D scan?

Our advice is usually around 23 – 24 weeks if you are having twins and 26 – 28 weeks for a single pregnancy. This is because the bigger your baby gets the less room there is for them to move around which can affect the image quality.

I am a little overweight, does this affect the scan?

It can do. Ultrasound pictures are produced by sound waves and if mum is overweight (or even underweight) it can affect the clarity of the pictures.

Do I have to tell my doctor or midwife that I have had a private scan?

No. This is a personal choice. However, you should be aware that if we find a problem we do reserve the right to inform your doctor or midwife if we feel it is in your best interest.

Are your ultrasound machines and sonographers as good as those in hospital?

Yes. All our machines are modern and are regularly serviced and calibrated. Our staff are experienced and qualified sonographer's who all work within the NHS as well as for us so you can be assured that all scans are performed to the highest standard.

 

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