Do I make an appointment for a four-dimensional b-ultrasound

A four-dimensional ultrasound requires an appointment. Do four-dimensional color Doppler ultrasound, generally in pregnancy 22-28 weeks to the hospital for examination, twin examination time is relatively early. Because this period to do four-dimensional color Doppler ultrasound examination, fetal development of the individual is not very large, moderate amniotic fluid volume, fetal activity space in the uterus is relatively loose, color Doppler images will be relatively clear. Do four-dimensional color Doppler ultrasound best to make an appointment, because the four-dimensional color Doppler ultrasound examination time is relatively long, if the day of examination of pregnant women more, waiting time for examination will be extended, easy to cause pregnant women fatigue, hunger and even hypoglycemia and other discomfort, not conducive to pregnant women health and four-dimensional color Doppler ultrasound examination, because in hunger state, the fetus is not easy to move, some organ tissue display unclear, not conducive to examination. Four-dimensional color Doppler ultrasound is the most advanced color Doppler ultrasound detection technology used in clinical practice at this stage. It can display real-time dynamic images of fetuses and is more suitable for large row deformation examination.