Pregnant women need to undergo various examinations during pregnancy so that doctors can understand the physical and fetal development of the pregnant woman. Ultrasound examination is one of the important prenatal examination methods during pregnancy, which is divided into four types: ordinary black and white, color, three-dimensional, and four-dimensional. Four dimensional examination is currently the most advanced and accurate examination. Some pregnant women want to know how long it takes to obtain results after undergoing four-dimensional examination?
Four dimensional color ultrasound is developed on the basis of three-dimensional color ultrasound. In addition to being able to observe the development of the fetus in three dimensions, it also adds real-time dynamic effects, which can see the fetal activity status, such as swallowing, breathing, limb movement, etc. Under normal circumstances, if the fetus is more cooperative and the examination is smooth, the examination can be completed in about half an hour. After waiting for about half an hour, the examination results can be obtained.
The best time for pregnant women to undergo four-dimensional ultrasound is within the range of 24 to 28 weeks of pregnancy. This is mainly the stage when the fetal brain is rapidly developing, and at this time, the fetal structure has basically taken shape. The fetal individual development size is moderate, the amount of amniotic fluid in the uterine cavity is sufficient, and the activity space is large. At this time, if a four-dimensional ultrasound examination is performed, the impact of fetal bone echoes is relatively small, and it is easier to collect relatively clear images.
The most important aspect of 4D ultrasound is to screen for fetal malformations, including facial malformations (cleft lip and palate), neurological malformations (anencephaly, microcephaly, hydrocephalus, spina bifida, and meningocele), digestive system malformations (omphalocele, visceral eversion, intestinal atresia, megacolon), urinary system malformations (hydronephrosis, polycystic kidney disease, megabladder, urethral obstruction), and other malformations (short limb malformation, conjoined body malformation, etc.).
