The time for pregnant women to do 4D is generally recommended to be 24-28 weeks of pregnancy.
Four-dimensional examination is based on two-dimensional ultrasound examination, and further through a special imaging method to three-dimensional display of fetal surface organs and other conditions, and the addition of the time dimension parameters, able to obtain real-time three-dimensional images to observe the dynamic activities of the fetus. This method of examination is chosen at the discretion of the doctor’s guidance and can play a positive role in monitoring the condition of the fetus and the progress of the pregnancy.
At 24-28 weeks of pregnancy, the development of fetal brain tissue, internal organs, limbs and the external appearance of the five senses has been basically completed, over the four-dimensional ultrasound to observe whether the fetal body surface is normal, the situation of the distal limbs and the development of various organs. The amniotic fluid is sufficient at this time, and the amniotic fluid can be used as a good window for sound transmission, so that the fetal image can be displayed more clearly.
In addition, because the time to do four-dimensional ultrasound will be longer, each hospital needs to make an appointment in advance to do four-dimensional ultrasound, it is recommended that pregnant mothers make an appointment in advance to the ultrasound room when doing obstetrics to build a file.