What is four-dimensional color Doppler ultrasound, the difference between it and ordinary color Doppler ultrasound, and what do you mainly check?

Shortly after I went to work this morning, I received a phone call from my cousin: "Brother, your cousin Lili is pregnant for more than 20 weeks. For the last prenatal examination, it is recommended to do four-dimensional color Doppler ultrasound in 20-26 weeks, saying that it is abnormal in large row. Don't miss it. We don't understand either, so Lili asked me to ask. Is this useful? We don't know whether the previous NT screening and Down's screening are useful. Anyway, we did it without paying for it ourselves, and the result was normal. However, this four-dimensional color ultrasound examination is self-funded, and we will not do it if it is useless. "

After listening to my cousin's question, I quickly said, "Almost all pregnant mothers will definitely get the same advice after being diagnosed with pregnancy. My advice must be done and don't miss it. I can't make it clear on the phone. I'll talk to you and Lili when I get home. " I hung up the phone and felt it necessary to get to know the four-dimensional color Doppler ultrasound with all the novice pregnant mothers.

0 1 What is four-dimensional color Doppler ultrasound?

Ordinary B-ultrasound is a kind of two-dimensional ultrasound, which mainly uses ultrasonic detection, and the image is also black and white. It can observe the tissue structure of the fetus, measure how big the head is and how long the body is.

Color Doppler ultrasound, actually black and white, is still a two-dimensional plane image, but on the basis of ordinary B-ultrasound, color Doppler ultrasound detection and diagnosis technology appears, which can observe the fetal blood flow and help to find the abnormal situation of the fetus in time.

Three-dimensional B-ultrasound is like a photo taken by a camera. What you see is a three-dimensional image, you can see the situation of the fetus, and you can see the situation of the fetus more accurately.

Four-dimensional B-ultrasound is like a dynamic image taken by a camera, which can clearly observe fetal congenital malformations such as cleft lip and palate, limb development deformity, meningocele, spina bifida and gastroschisis.

Optimal time of four-dimensional color Doppler ultrasound

Generally speaking, the best time is 20-26 weeks of pregnancy, because during this period, the fetal structure has been formed, the main organs of the fetus have developed, the amniotic fluid volume is moderate, and the fetus has entered the abdominal cavity, which is convenient for screening fetal malformations. Fetus and amniotic fluid are moderate in size, with large intrauterine activity space, relatively small influence of fetal bone echo, and relatively clear images.

Four-dimensional ultrasound is mainly a real-time dynamic effect. Mothers can see the baby's physiological activities such as movement, breathing, swallowing, yawning and tongue sticking in the mother's stomach through the screen, which is very intuitive. Therefore, if possible, the doctor can record it as a VCR, leaving precious video images for the baby.

What does four-dimensional color Doppler ultrasound check?

Four-dimensional color Doppler ultrasound can observe the growth and development of intrauterine fetus in many directions and angles, and provide accurate scientific basis for early diagnosis of fetal congenital body surface malformation and congenital heart disease.

Four-dimensional color Doppler ultrasound diagnosis of fetal congenital malformation mainly includes the following aspects:

1. Fetal facial deformities: such as cleft lip and palate.

2. Nervous system: no brain malformation, hydrocephalus, microcephaly, spina bifida and meningocele.

3. Digestive system: navel bulging, visceral eversion, intestinal atresia, Hirschsprung's disease.

4. Urinary system: hydronephrosis, polycystic kidney, huge bladder and urethral obstruction.

5. Other deformities: short limb deformity, conjoined deformity, cleft lip and four cavities.

6. Too much amniotic fluid, too little and so on.

Does four-dimensional color Doppler ultrasound affect the fetus?

Four-dimensional color Doppler ultrasound has become the first choice for image diagnosis in obstetrics and gynecology, providing a reliable basis for medical treatment and scientific research, and becoming an indispensable auxiliary diagnostic tool because of its small damage to human body, rapid and accurate diagnosis and repeated examination.

Color Doppler ultrasound is a kind of ultrasonic wave, which has no radiation, only sweeps the human body for a short time, and has no adverse effects on pregnant women and fetuses.