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How exactly does ultrasound work

How exactly does ultrasound work?

Until 30 years ago, little was known about life before birth. As has been studied for the first time a pregnant woman with ultrasound, which was a sensation – scientists were able to observe exactly how a child develops in the womb.

Ultrasound examinations are now routine with at least three appointments. By ultrasound, the doctor examines the child from head to toe and see if it’s developing. Possible abnormalities can be detected in time and in some cases treated in the womb.

Regardless of whether 2D, 3D or 4D – all ultrasonic modes based on the same technology: From a sound button inaudible sound waves are emitted from the body tissues that are thrown back as an echo and converted to images. The “supersonic” reflects wherever the tissue layer changes – for example, between the uterine wall and the amniotic fluid. Or between the bone and muscle tissue of the unborn. The picture offered by the transducer on the monitor is like a cross section through the body. It is not a photograph, but only a shadowy representation.

How do expectant parents feel about ultrasound?

Ultrasound examinations are not only of medical importance. The ability to observe the child and his movements through the abdominal wall, the experience has changed considerably during pregnancy. The expectant parents can see how the heartbeat of the baby, as it is in the uterine wall as it repels, or sucking his thumb. Many parents wait anxiously for the first ultrasound images their children.

How often during pregnancy, an ultrasound is done?

Where there is no risk or suspected that the unborn is something wrong, then three ultrasound appointments for sufficient: First ultrasound, ninth to twelfth weeks , the doctor checks the heartbeat of the unborn and calculated based on the size of the embryo, whose age and the due date. The physician should recognize now been reliably whether the wife, takes two or even more children. Second ultrasound, 19 to 22 Weeks now the gynaecologists makes a big check: It measures diameter head, chest and length of your baby to be reliable to determine developmental age, and he eventually corrected the date of delivery. He also examines all organs examined the location of the placenta and amniotic fluid volume. If interested in becoming parents, the doctor will tell you now the sex of their baby.

Third ultrasound, 29 to 32 Weeks. In this study is also the doctor the baby “measure” and assess individual organ functions. Because the placenta during pregnancy “wander” can, he will check the fit of the placenta again. Slips of this fact before the cervix, a normal delivery is impossible.

The location of the child can now give an indication of how the birth will be. Most babies are now upside down.

Are there any other ultrasound scans for pregnant women?

If the doctor at one of three ultrasound examinations suspects that the baby is not developing normally, he will refer the woman to an ultrasound specialist. The mother and child can examine more thoroughly, because it relies on two special ultrasonic methods: (colour) Doppler ultrasound this method will measure the blood flow in the body of the unborn. The doctor can determine if all the organs are well catered for, whether the child is adequately nourished through the umbilical cord, and whether the brain is well supplied with blood. 3D ultrasound, the ultrasound is normal “2D” – which stands for the height and width. This produces a flashes diagram showing a cross section through the body. If this thought about cutting from front to back straight through the head, appears the profile of the baby. There are now quite good 2D devices by which the physician can detect even the smallest details: the width of the muzzle or around the blood vessels in the brain.

Nevertheless, sometimes even more accuracy is required – then the 3D technology comes into play. To scale representation is joined by the deep: The outlines of the child are to be seen vividly, the images can be recorded in this way to examine from all sides. Important for the doctor: he can from the device ” do whatever obscures the view – for example, the umbilical cord. He has a clear view of the organs, which he plans to investigate.

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