To check the amount of amniotic fluid As part of a biophysical profile To determine the position of a fetus To assess the placenta How is an ultrasound scan performed? Although the specific details of each procedure vary slightly, generally, ultrasounds follow this process. Two types of ultrasounds can be performed during pregnancy: Abdominal ultrasound. A woman may need to have a full bladder for abdominal ultrasounds in early pregnancy. There are several types of ultrasound imaging techniques.
The most common is two dimensional, or 2D. This gives a flat picture of one aspect of the image. If more information is needed, a 3D ultrasound examination can be performed. This technique, which provides a three-dimensional picture, requires a special machine dating scan ultrasound procedure special training. But the 3D image allows the doctor to see width, height, and depth of images, which can be helpful in diagnosis. The 3D images can also be captured and saved for later review.What do the results mean? An obstetric ultrasound is an ultrasound of your pelvis which produces an image of the foetus in the uterus. A probe is used to pass sound waves into the body. An image of the baby is produced by the reflection of those sound waves. The images sonogram are displayed on a television screen. The sonographer performing the ultrasound can explain these images to you. Appropriate use of ultrasound poses no physical risk to you or your baby. Why would you have a prenatal ultrasound? You may have an ultrasound to check the development of your pregnancy. A prenatal diagnostic ultrasound can detect physical abnormalities including: Congenital heart defects: Abnormalities of the structure and function of the heart occur in 1 in pregnancies; Limb reduction defects: Short or missing bones in the arm or leg occur in 1 in pregnancies; Cleft lip palate: Failure of normal closure of tissue in the lip palate area occurs in 1 in pregnancies; Neural tube defects: Abnormalities of the brain, skull, spine and spinal cord e. How is an ultrasound performed? There are two ways in which obstetric ultrasound can be performed. Maternity: Pregnancy Ultrasound
Ultrasound in pregnancy
Women's Health Care Physicians
Early Pregnancy Scan (6 -14 weeks)
Ultrasound in Pregnancy
Dating Scan in Pregnancy – What to Expect
No radiation is used during the procedure. Obstetric ultrasound: How, Why and When.What is the purpose of the dating scan? The purpose of the dating scan is to check: how many weeks pregnant you are and work out your due date the estimated date of delivery, or EDD whether you're dating scan ultrasound procedure more than 1 baby that the baby is growing in the right place your baby's development This scan can detect some health conditions, such as spina bifida. Screening for Down's syndrome will happen at the dating scan if: you have agreed to have screening for the condition the scan takes place between 11 and 14 weeks of pregnancy The screening test for Down's syndrome used at this stage of pregnancy is called the "combined test". Find out more about the combined screening test for Down's syndrome. You will not be offered the combined screening test if your dating scan happens after 14 weeks. Instead, you will be offered another blood test between 14 and 20 weeks of pregnancy to screen for your chance of having a baby with Down's syndrome. This test is not quite as accurate as the combined test. Find out more about:.
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NHS and private ultrasound scans during pregnancy
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Appropriate use of ultrasound poses no physical risk to you or your baby. Oxford, Oxford University Press, References Campbell, S.
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