12 week pregnancy dating scan: here’s what to expect

We welcome your views on our website and invite you to take part in a brief survey when you’ve finished your visit. A nuchal translucency scan NT is an ultrasound scan that helps determine the likelihood of Down’s syndrome and other chromosomal abnormalities in unborn babies. It is a non-invasive procedure so doesn’t carry a risk of miscarriage. The chance of having a baby with the condition is one in 1, for women who are 20 years old, rising to one in for women who are 30 years old, and one in for women who are It doesn’t carry a risk of miscarriage as it’s non-invasive, but it doesn’t give a definitive answer. The scan will provide you with additional information on multiple pregnancies and it accurately dates your pregnancy. It can also exclude major abnormalities at that stage of the pregnancy.

Nuchal Translucency (NT) Ultrasound

This scan is carried out from 11 weeks to 13 weeks and six days. The scan is usually performed transabdominally but in a few cases it may be necessary to do the examination transvaginally. If you want to visit your own FMF page please click here.

At the time of the NT ultrasound, the sonographer or physician who does the scan can also accurately predict your due date, determine how many babies you are.

Pelvis or abdomen, pregnancy related or pregnancy complication, ultrasound scan of, by any or all approaches, for determining the gestation, location, viability or number of foetuses, if the dating of the pregnancy as confirmed by ultrasound is less than 12 weeks of gestation. Pelvis or abdomen, pregnancy related or pregnancy complication, fetal development and anatomy, ultrasound scan of, by any or all approaches, if:.

Pelvis or abdomen, pregnancy related or pregnancy complication, fetal development and anatomy, ultrasound scan of, by any or all approaches, for determining the structure, gestation, location, viability or number of foetuses, if the dating of the pregnancy as confirmed by ultrasound is 12 to 16 weeks of gestation. Pelvis or abdomen, pregnancy related or pregnancy complication, fetal development and anatomy, ultrasound scan of, by any or all approaches, with measurement of all parameters for dating purposes, if: a the dating for the pregnancy as confirmed by ultrasound is 17 to 22 weeks of gestation; and b the service is not performed in the same pregnancy as item Pelvis or abdomen, pregnancy related or pregnancy complication, fetal development and anatomy, ultrasound scan of, by any or all approaches, if: a the dating of the pregnancy as confirmed by ultrasound is after 22 weeks of gestation; and b the service is not performed in the same pregnancy as item Pelvis or abdomen, pregnancy related or pregnancy complication, fetal development and anatomy, ultrasound scan of, by any or all approaches, if: a dating of the pregnancy as confirmed by ultrasound is after 22 weeks of gestation; and b the ultrasound confirms a multiple pregnancy; and c the service is not performed in the same pregnancy as item ; and d the service mentioned in item , , or is not performed in conjunction with the scan during the same pregnancy.

The four most common stages to have an ultrasound

During your pregnancy, your health care provider will offer prenatal screening. Prenatal screening can tell you your chance of having a baby with birth defects. The tests can consist of one or more blood tests and ultrasound. These tests are ordered by your health care provider and can be done at any hospital or laboratory. During the first few days after birth, your baby will have a newborn screening test, which includes a blood test and examination by a doctor or midwife.

Nuchal translucency is the name for the fluid behind the neck of your baby. Accurate dating of your pregnancy; Diagnosis of multiple pregnancy; Detection of​.

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. Your express permission will also be asked during your appointment. Your results will be communicated within 2 working days of the Laboratory receiving the blood sample. Your results will be sent to the email address supplied when you booked your scan. The email will be accompanied by some guidance as to what to do with the results.

A dedicated telephone number will also be given should you have any queries relating to your results. In a small number of cases it may be necessary to contact you directly to discuss further information or to explain your NT scan results further. On these occasions the telephone contact information collected when you booked your scan will be used. Very rarely, there may be a problem that is totally unexpected and we are the bearers of bad news.

Never easy to hear, we will ensure you have the time, support and a plan of care arranged.

3.2 Nuchal Translucency Assessment

Women also have routine blood tests or ‘blood screening’ to find out the mother’s blood group and several other things. For more information on screening tests please see ‘Resources ‘. Though all the pregnancies considered here began in the usual way with early scans and blood test screening, they all differed subsequently because the baby was found to have problems.

First trimester contingent testing with either nuchal translucency or cell-free DNA. Cost efficiency and the role of ultrasound dating. Acta Obstet Gynecol Scand.

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.

Early pregnancy scan (booking or dating scan)

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. Occasionally during the scan, a miscarriage might be diagnosed even though you might still ‘feel pregnant’.

Dating Scan · Nuchal Translucency Scan (First trimester combined screening) · The 20 week (Anatomy) Scan · Growth Scans.

The nuchal translucency NT refers to the pocket of fluid at the back of the fetal neck. The measurement of the nuchal translucency is part of the combined screening test for trisomy 21 and trisomy 18, called enhanced First Trimester Screen eFTS. An increased NT measurement increases the chance for other chromosome differences, additional genetic conditions, and can also be helpful to predict structural differences that might be more obvious later in pregnancy such as a heart defect.

At the time of the NT ultrasound, the sonographer or physician who does the scan can also accurately predict your due date, determine how many babies you are carrying and examine the early basic structural development of the fetus. Examples of circumstances when this may be applicable are: declining to have prenatal screening for trisomy 21 and trisomy 18, Non-invasive Prenatal Testing NIPT has already been initiated, or the pregnant individual is carrying more than two babies triplets, quadruplets etc.

Your health care provider will schedule your NT ultrasound at a hospital or a clinic with a certified NT sonographer or physician. We are updating the map regularly by removing the NT ultrasound sites that we know to be closed at the moment. However, w e recommend contacting the facility of interest to confirm that their status is up-to-date and that they are offering NT ultrasound services during the evolving COVID pandemic.

This map is merely a tool to assist providers and the public in locating NT ultrasound services in Ontario. The following caveats apply:. If you do not have access to a hospital or a clinic with a certified NT sonographer or physician, your health care provider can give you information on other prenatal screening options, or provide you with choices on the closest location to obtain this scan.

Nuchal scan

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A nuchal translucency ultrasound is performed in the first trimester of pregnancy If you are sure of your dates, the most accurate time for this blood test to be.

Since chromosomal abnormalities can result in impaired cardiovascular development, a nuchal translucency scan is used as a screening, rather than diagnostic, tool for conditions such as Down syndrome , Patau syndrome , Edwards Syndrome , and non-genetic body-stalk anomaly. There are two distinct measurements: the size of the nuchal translucency and the thickness of the nuchal fold. Nuchal translucency size is typically assessed at the end of the first trimester, between 11 weeks 3 days and 13 weeks 6 days of pregnancy.

All women, whatever their age, have a small risk of delivering a baby with a physical or cognitive disability. The nuchal scan helps physicians estimate the risk of the fetus having Down syndrome or other abnormalities more accurately than by maternal age alone. Overall, the most common chromosomal disorder is Down syndrome trisomy

Early Pregnancy Viability Scan (7 Weeks – 11 Weeks)