What is Ultra sonography?
Ultra sonography/ultrasound/sonography is used commonly in prenatal pregnancy for scannning underneath of the abdomen. It starts with applying a gel on the abdomen of the woman. Then a device called transducer is kept on the abdomen which sends VHF sound waves.
These waves are of high frequency but safe and non-audible to human ears. Sending VHF waves results in the appearance of images on the monitor.
However, trans vaginal ultrasound is also done in early pregnancy to determine the gestation age.
It is done by inserting a tube inside the vagina which produces clearer images. But it is not much common in use. It can be done at first scan but for later scannings, tansducer is the preferred way for sonography.
Expert says that ultra sonography is 100% safe, produces no side effects, cost effective and does not contain harmful UV rays unlike X-ray tests.
Purposes of ultra sonography
Ultra sonography is useful in several cases. Since opting for sonography is harmless, hence it can be done at number of times as per the requirement. Sonography helps in following ways.
In determining early pregnancy
Vaginal bleeding during early pregnancy
Recognising molar and ectopic pregnancy
Gestational age and due date
Miscarriage history in women
Diagnosis of fetal age, development and malformation
Amniotic fluid condition and placenta position
During ultrasonography, a doctor can prescribe the health of the fetus and its growth. An ultrasonogrphy is performed usually at 20 weeks gestation period. Images on the monitor reflects the movements of body and records of heartbeat. On the basis of fetus age, hands, legs and others parts of the body can be seen.
It is possible to determine the gender of the fetus using sonography but surity can not be 100%. A misconception might be obtained by misinterpration of the images shown on the monitor during sonography. But now-a-days, mostly doctors refuse to reveal fetus gender as it is banned legally.
3D and 4D Ultra sonographies
Newer technologies has introduced 3D and 4D sonographies. In 3D sonography, you can have the three dimensional view of the fetus and abnormalities, if any, can be also known. In 4D sonography, you can have moving picture of fetus.