What can be seen in a 4D color ultrasound for twins?

　　Four-dimensional color ultrasound (4D ultrasound) is a common prenatal examination method. Under normal circumstances, 4D ultrasound for twin pregnancies can visualize the number and position of the fetuses, fetal structures, fetal movements, amniotic fluid volume, and fetal growth and development. The specific analysis is as follows:

　　1. Fetal Number and Position

　　4D ultrasound can confirm the presence of two fetuses within the uterus and clearly define their positional relationship, such as whether there are two separate gestational sacs or two fetuses within a single sac, as well as their relative positions.

　　2. Fetal Structure

　　4D ultrasound clearly displays the facial features, limbs, and internal organs of the twins, aiding in the detection of structural abnormalities.

　　3. Fetal Movement

　　With 4D ultrasound, real-time dynamic fetal movements can be observed, including actions such as finger sucking, yawning, and blinking, allowing parents to experience the vitality of their baby in advance.

　　4. Amniotic Fluid Volume

　　Doctors can use 4D ultrasound to assess the amniotic fluid volume around each fetus and determine whether it is within the normal range. Excessive or insufficient amniotic fluid may affect fetal health.

　　5. Fetal Growth and Development

　　Doctors can measure indicators such as the biparietal diameter, femur length, and humerus length of the twins to evaluate their growth and development and determine whether there is any developmental delay or other issues.

　　Pregnant women are advised to undergo regular prenatal checkups to help detect fetal abnormalities early and ensure the health of both mother and fetus.