12 week scan: Your dating scan guide
Back to Your pregnancy and baby guide. All pregnant women in England are offered an ultrasound scan at around 8 to 14 weeks of pregnancy. This is called the dating scan.
A nuchal translucency scan is part of the ultrasound scan that may give an be done alone, or it might be able to be done while you’re having your dating scan.
We recommend your First Trimester Ultrasound is performed at 13 weeks, we call this your anatomy scan, at this time you will be provided with information that has not yet been available during your pregnancy, which is why the 13 week scan is important. We will check that your baby is growing well and confirm your due date along with some other key checks including:. At 13 weeks, the anatomy of your baby can be assessed in great detail.
Technology has advanced significantly and we can now recognise or suspect any structural abnormalities at 13 weeks, these checks are best identified via an internal ultrasound ideally performed between 12 weeks 5 days and 13 weeks 2 days. The nuchal translucency NT of the fetus is identified and measured during this narrow window of time. The NT is a collection of fluid between the skin and soft tissues of the neck, it is often increased with Down syndrome and other chromosomal or congenital abnormalities, you can read more about Screening for Down syndrome here.
We will measure your uterine artery blood flow, combined with other maternal factors for a pre-eclampsia risk assessment. Pre-eclampsia is a disease affecting the health of both mother and baby, it is one of the primary reasons that you may need to deliver your baby earlier, you can read more about pre-eclampsia here. During this scan, we will look at the insertion of the cord into the placenta. The proportion of amniotic fluid to baby size is greater at this early stage, which allows for good visualization of the cord and therefore helps to detect if there is any variation from normal, which we can manage throughout your pregnancy.
Now comes the moment when you might get to see your baby for the first time — the week scan. We run through what scans are and what to expect on the day. This is often just called a scan. The scan builds a picture from the way high-frequency sound waves from a probe passed over your tummy reflect off your baby in your womb Whitworth et al, ; NHS, a; NHS, b. Because of this, the week scan can also be called a dating scan NHS, c.
an early pregnancy scan (dating or booking scan) between 11 and 14 You might also be offered a nuchal translucency scan (NT) at your.
The browser you are using is too old for our website. Please visit www. Learn why the dating scan is carried out, why your due date might change, and get tips to help you prepare for your appointment. Discover the science behind your baby’s developments, week-by-week. Although sometimes known as the reassurance and viability scan, your 12 week scan is more typically referred to as the dating scan. Bear in mind that you may not have your scan at exactly 12 weeks; it usually takes place between your 8th and 14th week of pregnancy.
During the first scan your sonographer will check the size of your baby to give a more accurate idea of their age and your due date. It will provide clarity on whether you are expecting more than one baby. The scan is harmless to mother and baby and will typically take 20 minutes for the sonographer to complete before he or she provides a report for your midwife to share with you.
As part of your first scan at around 12 weeks, you may choose to have the Nuchal Transluceny NT scan which is part of the combined screening test for Down’s syndrome. Get your complete guide on what to pack in your hospital bag. From C-section to labour, Aptaclub has it covered. Learn why a low-sugar diet is better for you and your baby during pregnancy, and read ideas for healthier alternatives.
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If you attend without a suitable face covering single-use masks are available to buy at the time of your appointment, subject to availability. Your blood needs to be taken either by us at the time of your appointment or privately by your midwife, GP or local phlebotomist. When you book online, depending on your chosen location you may be contacted to arrange the most convenient way for you to have this done close by. Risk assessment for Down’s Syndrome between 11 — 13 weeks and 6 days gestation, no sexing.
By booking a NT scan appointment with us you are agreeing to your personal information being shared with TDL solely for the purpose of this test.
This scan is carried out from 11 weeks to 13 weeks and six days. This is particularly relevant for women who cannot recall the date of their last period, cycle, or who have conceived whilst breastfeeding or soon after stopping the pill. This is calculated by taking into account the age of the mother, measurement of two.
Ultrasound scans can tell you lots of information about your baby. They check that they are growing and developing normally, using sound waves to build a picture of your baby in your womb. They have no known side effects on mothers or babies and can be carried out at any stage of pregnancy. Scans are performed by radiographers or midwives who are specially trained in ultrasound.
This will involve a small amount of cold gel being put on your tummy and a hand-held probe being rolled over your skin to get various views of your baby. The main aim of this scan is to date your pregnancy and confirm how many babies you are carrying. The trained sonographers take measurements, which allows them to calculate your due date.
Nuchal Translucency Ultrasound
ARC Forum Contact us. Ultrasound scans have been used in antenatal care for over thirty years and there is no evidence to suggest that they are harmful to you or your baby. Most women whose pregnancy is progressing without complications will be offered a maximum of two to three scans in their pregnancy. Most scans are performed by a sonographer, who is the healthcare professional trained to use the ultrasound equipment, to take measurements of your baby and to check for major anomalies.
Sonographers are not specialists in obstetrics or fetal medicine, so if something is found you will usually be referred to someone with specialist knowledge.
This leaflet explains a screening test called an antenatal ultrasound scan. Between 11+6 to 13+6 weeks* (the nuchal dating scan) A long cervix means that you taking a sample of the amniotic fluid that surrounds your baby. You can.
This scan will also show if you are expecting a multiple pregnancy. Please drink 1 litre of water and hold for one hour prior to your appointment. Do not empty your bladder until after the examination. The sonographer will tuck a piece of tissue into your underwear to protect your clothes, then drop some gel onto your abdomen. This helps the scanning head to glide smoothly over your skin to get a clear image.
Most dating scans are done with a trans-abdominal transducer and require a full bladder. However, if the pregnancy is in very early stages, the gestational sac and foetus may not be big enough to visualise and you may be offered an internal, transvaginal TV scan which will result in clearer images. Your image films will be provided to you at the completion of appointment. Nuchal Translucency weeks. Sometime between weeks 12 and 14 of your pregnancy you might be offered a Nuchal translucency scan.
A Nuchal Translucency NT assessment is used to indicate whether a baby has a low or high risk of a chromosomal abnormality.
This first routine scan is carried out for the following reasons:. It is not diagnostic. We also like to arrange this for around 12 weeks, but it can be performed between 10 and 14 weeks.
The dating scan, also known as the 12 week scan, is offered between 8 and 14 weeks will last 10 minutes or so, during which several images of your baby are taken. A Nuchal fold scan reveals the likelihood of your baby having Down’s.
Nuchal translucency is the name for the normal fluid space behind the neck of a foetus unborn baby that can be seen on ultrasound scans. A nuchal translucency scan also called first trimester of pregnancy screening is carried out during weeks 11—13 of a pregnancy. The scan uses ultrasound to screen for Down syndrome, or other chromosomal or inherited conditions in the foetus. Other non-chromosomal conditions, such as neural tube defects, abdominal wall defects, limb abnormalities and some congenital heart disease, can also be detected at this stage of the pregnancy.
Screening can determine the likelihood of risk of an abnormality, but does not diagnose the condition. If screening does identify a possible risk, it does not necessarily mean there is an abnormality present, but does mean that further testing is necessary. Women who return a high-risk result from the screening will be offered formal genetic testing using other procedures, such as amniocentesis or chorion villus sampling CVS.
All women are offered a nuchal translucency test regardless of their age, and 19 out of 20 women have a normal screening result. Any patient might be referred for a nuchal translucency test regardless of their age. Your referring doctor GP or obstetrician will be able to tell you whether you are eligible for a Medicare rebate for the scan. There is very little preparation required. You should have some fluid in the bladder, but not be uncomfortably full.
This is to ensure that the inside of the abdominal area is seen clearly on the ultrasound images.