All medical pregnancy ultrasounds can be made at our midwifery practice on the Scheveningseweg. We know that many pregnant women and their partners look forward to these ultrasounds and that it is a very special moment to be able to see the baby in advance.
On this page we would like to explain more about why and how we make the different ultrasounds.
In our practice you can opt for a vitality ultrasound. In the early stages of pregnancy, we can already check with the ultrasound whether the pregnancy is in the womb and whether the baby's heart is beating. It is best to schedule this appointment when you are between 7-8 and 10 weeks pregnant. The examination takes about 10 minutes. This ultrasound can often be done through the abdomen, but we often have a better picture with a vaginal ultrasound.
The period between the first positive pregnancy test and this ultrasound can be an uncertain period. are. For example, if you have (a little) vaginal bleeding, we can check earlier with the ultrasound. Unfortunately, these very early ultrasounds are a snapshot and it is difficult to predict whether the blood loss is a precursor to a miscarriage. It is often necessary to repeat these ultrasounds after 10-14 days.
Very important: We look at a very small bubble in the uterus, so we want the best possible ultrasound image. What can help is:
The sonographers for the vitality ultrasound are midwives and sonographers: Miriam van Oosteinde and Michelle Beijerinck or sonographers: Lisette Herbert-Vermeer or (Mr) Louwbert Janse.
The dating scan takes place around 11 weeks of pregnancy. The purpose of this ultrasound is to determine the due date. For this we measure the baby from the head to the tailbone. (CRL crown-rump-length). Babies go through the same stages of development up to 12 weeks, they grow at an equal rate. With the measurement of the baby, we can therefore determine how long you have been pregnant. The baby is about 40 mm at 11 weeks.
The due date indicates when the pregnancy is 40 weeks. But… the due date does not actually exist. It is better to speak of a due period. Most babies are born between 37 and 42 weeks of pregnancy. And therefore not exactly at 40 weeks.
Very important: we want a precise measurement of your baby in the correct ultrasound plane. What can help is:
The sonographers for the dating scan are midwives and sonographers: Miriam van Oosteinde or Michelle Beijerinck or sonographers: Lisette Herbert-Vermeer or (Mr) Louwbert Janse.
From 1 September 2021, pregnant women can also participate in the 13-week ultrasound in addition to the 20-week ultrasound. This is done in the context of the national, scientific IMITAS study.
The 13-week ultrasound is a medical examination that you can have done if you are between 12 weeks and 3 days and 14 weeks and 3 days pregnant. The 13-week ultrasound is not mandatory. With the 13-week ultrasound, you can have your child examined early in the pregnancy to see whether your child has serious physical abnormalities. During a 13-week ultrasound, the sonographer looks at the skull, heart, abdomen, arms and legs, spine, nuchal fold and placenta, among other things. The sonographer also checks whether the amniotic fluid is normal. At the 13-week ultrasound, your baby is smaller and less developed than around 20 weeks of pregnancy. That is why there is less visible than with the 20-week ultrasound. But some often serious abnormalities can already be seen, for example an open skull. Some abnormalities are less visible, such as heart defects. Sometimes the sonographer thinks he sees an abnormality, but after additional examination it turns out that there is no abnormality. It can also sometimes take a long time before there is clarity. The 13-week ultrasound may therefore make you (unnecessarily) anxious or insecure.
NOTE: If the sonographer has not been able to assess everything properly, he/she will perform a vaginal ultrasound. to offer. You will receive it immediately. If you do not want a vaginal ultrasound, you can refuse this. If not everything can be visualized with the vaginal ultrasound and there are no indications of abnormalities, the sonographer will write down what was not (yet) clearly visible. You can then choose to look again at the 20-week ultrasound at 20 weeks. It will then be later in the pregnancy and more will be visible.
You pay nothing for the 13-week ultrasound.
If you opt for the 13-week ultrasound, you will participate in a scientific study of the 13-week ultrasound (IMITAS study). By signing the consent form, you consent to the use of your data for the scientific study of the 13-week ultrasound. The data is stored in your care file and in the national database (Peridos www.pns.nl).strong>Very important: at the 13-week ultrasound, the sonographer must assess physical structures in a baby about 66mm. What can help with this ultrasound examination is:
The sonographer for the 13-week ultrasound is Lisette Herbert-Vermeer or (Mr) Louwbert Janse.
Between 18 and 22 weeks of pregnancy, there is the possibility of a Structural Ultrasound Examination (SEO). This ultrasound reveals clearly visible physical abnormalities. If no abnormalities are seen on this ultrasound, a specially trained sonographer will carry out this examination with an advanced ultrasound machine.
These 20-week ultrasounds are made in our midwifery practice. Your health insurer will reimburse the 20-week ultrasound. The 20-week ultrasound is not specific for detecting chromosome abnormalities such as trisomies. However, physical abnormalities may match certain chromosome abnormalities or other hereditary syndromes, so that invasive diagnostics (for example amniocentesis) can still be offered.Even if no abnormalities are seen during the ultrasound, we cannot guarantee a 'healthy baby'. '. A number of abnormalities arise later, the baby is developing. Sometimes abnormalities are not visible on the ultrasound or they are missed due to, for example, an unfavorable position of the baby or an unclear image. In case of doubt or if we see an abnormality, we will refer you to the LUMC (Leiden University Medical Center) for follow-up testing.Very important: at the 20-week ultrasound, the sonographer must assess structures in the baby. What can help with this ultrasound examination is:
The sonographer for the 20-week ultrasound is an obstetrician and sonographer: Michelle Beijerinck or sonographers: Lisette Herbert-Vermeer or (Mr) Louwbert Janse.