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About 18 - 20 weeks - Some women are offered a scan in the second trimester at around 18 to 20 weeks.
Known as the anomaly scan or Level II to check that your baby is developing normally.
If you are experiencing pain or bleeding for example. You may have your first scan if unsure of the date of LMP.10 to 14 weeks - It is recommended that all pregnant women have a dating scan in the first trimester at around 12 weeks of pregnancy to confirm their dates.
First trimester ultrasonic scans may show 'soft' markers for chromosomal abnormalities, such as the absence of fetal nasal bone, an increased fetal nuchal translucency (back of the neck) to enable detection of Down syndrome fetuses.
So if you are having a scan in early pregnancy, you will need to drink several glasses of water beforehand so that your uterus is pushed out of your pelvis by your bladder, allowing the sonographer to get a good picture of your baby.
If you have any bleeding complications in pregnancy, the lower part of the uterus needs to be viewed carefully to make sure that the afterbirth (placenta) is not in the way.
Ultrasound has been used in pregnancy for about 30 years, it has progressively become an indispensible obstetric tool and plays an important role in the care of every pregnant woman.
The common reasons for your doctor to request an pregnancy ultrasound scan are: Five, six or seven weeks - If there is any need to check the viability of your pregnancy, you may have a early scan when you first visit your care provider.
The contrast between these different shades of white, grey and black allows your sonographer to interpret the images. You will probably be give you a printout of your baby by the sonographer as a keepsake, it is important to remember the main purpose of the scan.If you have recently had an ultrasound and you want to know how to interpret the images on your ultrasound, then you may benefit from learning about some of the basics of ultrasound imaging.You may also want to know how to pick out specific features of your pregnancy ultrasound, such as the baby’s head, arms, or sex.A scan performed at 18 to 20 weeks the fetus is large enough for an accurate survey of the fetal anatomy.Congenital malformations, multiple pregnancies can be firmly diagnosed and dates and growth can also be assessed. Further scans may be necessary if abnormalities are suspected.28 to 40 weeks - Growth scans in the third trimester may be recommended if a previous baby was small, if you are having twins or when there are other complications of pregnancy, for instance if you are diabetic.