How many months is the best time to do four-dimensional color Doppler ultrasound?

At which month of pregnancy is it best to do a four-dimensional color ultrasound? Because the four-dimensional color ultrasound technology can display the growth and development of the fetus more clearly and three-dimensionally, it can do a good job in fetal malformation screening, and expectant mothers can also meet their babies in their belly earlier. Therefore, at present, four-dimensional color ultrasound has become a prenatal check-up that pregnant women are very keen on, but four-dimensional color ultrasound cannot be done anytime and anywhere!

It is more appropriate for expectant mothers to do four-dimensional color ultrasound when they are 25-28 weeks pregnant, which is about six or seven months pregnant. Because the fetus is in the rapid development stage of the brain around 25 weeks, the fetal structure at this stage has been formed, the baby's size and amniotic fluid are moderate, there is a large space for movement in the uterine cavity, the fetal bone echo effect is relatively small, and the image will be clearer. If you do a four-dimensional color ultrasound too early, the baby will be very small and some tissues will not be clearly visible, making it impossible to clearly observe the growth and development of the fetus and screen for deformities.

1

Is it necessary to do four-dimensional color ultrasound?

Four-dimensional color ultrasound transcends the limitations of traditional ultrasound. In addition to displaying real-time dynamic images of the fetus in the womb, it can also comprehensively and multi-dimensionally observe the development of the fetus in the uterus, and examine the fetal epidermis, such as cleft lip and palate, spina bifida, and incomplete development of the brain, kidney, heart, and bones, etc., providing accurate scientific evidence for the early diagnosis of congenital epidermal malformations and congenital heart diseases of the fetus.

2

Does the four-dimensional color ultrasound have any effect on the fetus?

Four-dimensional color ultrasound is a very safe examination technology. If four-dimensional color ultrasound is used for fetal fetal malformation examination, it will not cause any harm to the fetus. Traditional B-ultrasound is ultrasonic transmission, while four-dimensional color ultrasound does not have electromagnetic radiation and electromagnetic radiation. It is a sound wave frequency transmission, which has no harm to body tissues. Pregnant mothers can carry out the examination with peace of mind without worrying about whether it will cause radiation harm.

3

What is the difference between four-dimensional color ultrasound and general B-ultrasound?

Black and white ultrasound diagnostic technology uses grayscale matching to display the sonogram of a cross-section of the body scanned by the sound beam. B-ultrasound has only one camera and usually only an examination cavity, so its diagnostic range is limited, and the two-dimensional static imaging is blurry and easy to misdiagnose.

Three-dimensional color ultrasound is a high-pixel black and white B-ultrasound plus color Doppler. It has all the functions of traditional B-ultrasound and can capture different weeks of pregnancy. Although it is a three-dimensional image, the image is still observed in the form of a photograph, the observation surface is partial, and the picture quality is slightly weaker than that of four-dimensional color ultrasound, so the inspection is not comprehensive and accurate.

What can four-dimensional color ultrasound detect?

1. The baby’s facial deformity: such as cleft lip and palate.

2. Central nervous system: anencephaly, hydrocephalus, microcephaly, spina bifida and meningocele.

3. Digestive tract: navel intestinal protrusion, visceral eversion, gastrointestinal atresia and megacolon, etc.

4. Urinary and reproductive system: hydronephrosis, polycystic kidney disease, megacystis, and urethral obstruction.

5. Other deformities: short limbs, conjoined twins, cleft lip and palate, and four-chamber heart.

6. Too much or too little amniotic fluid, etc.