As is well known, women face various pregnancy tests during pregnancy, such as 4D ultrasound, Down syndrome screening, etc., and the timing of these tests is fixed. For women who are pregnant for the first time, these are undoubtedly the most curious questions. So how many weeks does 4D ultrasound take?
Under normal circumstances, the first 4D ultrasound should be performed between 20-24 weeks of pregnancy, during which the ratio of amniotic fluid to fetal size is just right, making it easier to observe the condition of the fetus. The second four-dimensional ultrasound should be performed between 28 and 32 weeks, during which the fetal organs are more fully developed and can better observe whether the fetus has minor deformities and other problems.
When pregnant women undergo four-dimensional ultrasound, some doctors may instruct them to do some cooperative movements to facilitate better observation of fetal development. During this period, pregnant women must not cooperate excessively or resist.
It is very important to grasp the timing of 4D ultrasound, so pregnant women must keep in mind their pregnancy time, avoid exceeding the time limit or doing 4D ultrasound in advance, which may not accurately observe the problems of the fetus. Before doing 4D ultrasound, there is no need to hold urine or empty stomach, so it is only necessary to make an appointment with the hospital in advance and go for the examination normally.
