663 5060 ADDRESS: 60 Mount Street Lower, Grand Canal Dock, Dublin 2 info@merrionfetalhealth.ie

Anatomy Survey Scans




Due to recent developments of COVID 19 and following HSE guidelines,

patients are requested to attend ultrasound scans unaccompanied. This

includes partners, family members and children.


We would like to inform all patients that we remain open for ultrasound

scans as part of routine pregnancy care. We are closely following HSE

and NMH guidelines which are being constantly updated and developed.

These developments can be found via the NMH website. We remind our

patients that all our machines and ultrasound probes are always cleaned

thoroughly and disinfected with medical grade cleaning solution.

If you have any queries please do not hesitate to call in advance.


If you have flu-like symptoms or feel unwell, or if you might have been

exposed to the coronavirus, please contact us to re-arrange your

appointment. Call 663 5060.


For further information click through to go the HSE page
or you can go to our page that includes links to a selection of reliable resources - the HSE and others - click on: Coronavirus Pregnancy Rescources

Anatomy Pregnancy Survey Scan – 18 -22 weeks

Cost €160.00

To include photographs and computerised report

This scan consists of a full anatomical survey and its purpose is:

  • to determine the position of the baby
  • to determine the location of the placenta
  • to check the amniotic fluid around the baby
  • to monitor the growth of the baby to ensure that it is growing normally

Anatomy Survey Scan-What To Expect At Merrion Fetal Health?

This scan is also referred to as the routine scan or the 20 week scan. This scan essentially examines the baby’s anatomy in a detailed manner and is carried out between 18 and 22 gestational weeks. The anatomy scan is a non invasive trans-abdominal scan, and it is not necessary to attend the clinic with a full bladder for the twenty week scan. When you attend the Merrion Fetal Health Clinic for an anatomy survey scan, it is quite possible that you may have been at the clinic for an early pregnancy scan, but if you have not been with us before then you will fill out a registration form when you arrive.

You will await your sonographer in the waiting room. Your sonographer will bring you to the ultrasound room and confirm your details before performing the ultrasound scan. Lots of the time your sonographer will be examining anatomical details of your baby which are not obvious to you. The sonographer will check all your baby’s organs and take measurements and images. She will check your baby’s face, baby’s spine, baby’s abdominal wall, baby’s heart, kidneys and stomach. Your baby’s arms legs, hands and feet will also be checked. Measurements of the baby’s head circumference, abdominal circumference and femur will be taken.

As well as checking how your baby is growing the sonographer will check the placenta, the umbilical cord and the amniotic fluid. The team at Merrion Fetal Health wish to ensure that your visit is as relaxing as possible and we welcome any questions, so please do not hesitate to ask your sonographer any questions you may have.

Anatomy Survey Scan Considerations

Do you wish to know the gender of your baby?

At around 19 weeks it can be possible to tell the sex of the baby at this scan, but it is not always. The baby may not be in a favourable position to determine the gender. However if you would like to know the gender of your baby please inform your sonographer at beginning of your ultrasound. Determining the sex of the baby is not always an easy job as we are depending on baby to be in a position that allows us to visualise the genital area and the baby does not always oblige.

What will happen if a problem is suspected?

If at the time of scan a problem is suspected, you will be told at that stage that there may be a problem. A full discussion of the problem may require you to come back for further scanning and a discussion with one of our fetal medicine specialists. This can usually be organised within 24 hours if the problem is deemed urgent. Most problems that need repeat scanning are not serious and approximately 15% of scans will need to be repeated for one reason or another. At the end of your 20 week scan you will be given images of your baby and a detailed report on the findings of your scan. A copy of this report will be sent to your obstetrician and/or GP as required. To book an Anatomy Survey Pregnancy Scan please call (01) 663 5060 or use the Make a Booking online form. This scan is from 18 weeks to 22 weeks. MFH is conveniently located in Dublin 2 and offers ultrasound for all stages of pregnancy including early pregnancy scans, nuchal scans, anatomy and growth scans. Merrion Fetal Health is open to all women not just those attending the National Maternity Hospital.

ConditionWhat the problem isChance of being seen on the scan
Spina BifidaOpen Spinal Cord90%
AnecephalyAbsence of the top of the head99%
HydrocephalusExcess fluid within the brain *60%
Major Heart Problems20%
Diaphragmatic HerniaA defect in the muscle which seperates the chest and the abdomen60%
Exomphalos/GastoschisisDefects of the abdominal wall90%
Major Kidney ProblemsMissing or abnormal kidneys85%
Major Limb AbnormalitiesMissing bones or very short limbs15%
Cerebral PalsySpasticityNot Seen
AutismNot Seen
Down's SyndromeMay be associated with heart and bowel problemsAbout 40%

The table lists different types of birth defects and how likely scanning is to identify each problem during pregnancy.

The above information is based on audit figures of own practice at the National Maternity Hospital.

*many cases present for the first time late in pregnancy or even after birth.

Why Attend Merrion Fetal Health?

1. We are a medically led clinic, with a great clinic team – so in other words we balance medical expertise, with peace of mind and a friendly, professional team.

2. We can also offer follow on treatment when there is a need, because it is consultant led. This offers patients continuity during pregnancy. Follow on care with a fetal medicine specialist at the National Maternity Hospital, Dublin, can be arranged if you so wish.

3. There is an increasing demand for prenatal ultrasound from patients, midwives and doctors. The current public health system in Ireland is unable to cope with the existing demand and many patients and doctors seek ultrasound services in the private sector.

4. Merrion Fetal Health exists to address the deficit in private services and is differentiated from existing private ultrasound services in that it is medically led delivering an unrivalled peace of mind through service excellence.

5. Individually designated appointment times allow you to avail of unrivalled comfort and privacy in a unique environment.

6 State-of-the-art equipment combined with highly qualified and experienced fetal ultrasound specialists allows Merrion Fetal Health to provide a fetal diagnostic service that is second to none.

7. 42″ screens in each ultrasound room allows you and your partner to see your scan clearly and in complete comfort.

8. Merrion Fetal Health is conveniently located in Dublin 2 and offers ultrasound for all stages of pregnancy including early pregnancy scans, nuchal scans, anatomy and growth scans. Merrion Fetal Health is open to all women not just those attending the National Maternity Hospital.

9. Last but certainly not least, our team are not only professionals with a wealth of experience, but many of us are parents also, and quite a few of us are also women who have been pregnant ourselves and given birth.

Anatomy scans questions quick references



1. What is an anatomy scan?

2. How long does it take for an anatomy scan?

3. What is a Level 2 ultrasound?

What is an anatomy scan?

The anatomy scan is normally carried out between weeks 18 and 22 and it is considered a level 2 ultrasound. Essentially this is a more detailed ultrasound. The sonographer should be able to tell you the sex of your baby, if you wish. She/he will take a number of measurements during the scan in order to check that your baby is growing normally.

How long does it take for an anatomy scan?

An anatomy scan normally takes between 30 to 45 minutes to perform, and this depends on how your baby is lying and how much she co-operates.

What is a Level 2 ultrasound?

A Level 2 ultrasound is a scan that goes into a more detailed analysis of the fetus. The fetal anatomy and its development are evaluated during the scan which typically takes between 30 to 45 minutes to perform.



Anatomy scans PDF



Nuchal Translucency

12-14 weeks


Anatomy Survey

18-22 weeks


Later Dating

12-17 weeks


Gender Scan

19 weeks onwards


Growth & Well Being

22 weeks onwards


Post Dates & Liquor

40 weeks onwards


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About The Clinic

Merrion Fetal Health Pregnancy Scans Dublin 2

About The Consultants

Dr. Rhona Mahony

About The Team

Pregnancy scans lead sonographer at Merrion Fetal Health

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Patients' Information


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Pregnancy Magazines

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18 weeks pregnancy scan facial profile Merrion Fetal Health

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All articles on the blog and website are intended as information only. Please do not consider any of the information provided here as a substitute for medical advice. At all times seek medical advice directly with your own doctor and medical team.