How many months of pregnancy is four dimensional color ultrasound?

So clear, it's better to be a little more expensive, we can't see anything here.

The instrument used in four-digit color ultrasound is called "four-dimensional color ultrasound diagnostic instrument", which is a technology that can obtain three-dimensional images in real time. It provides multi-faceted applications in many fields, including abdomen, blood vessels, small organs, obstetrics, urology, neonatal and pediatrics, and plays an important role in fetal deformation and avoiding the birth of defective babies.

In fact, there is no certain accurate time for the examination of four-dimensional color ultrasound, the so-called best time for four-dimensional color ultrasound is nothing more than the most suitable time to do, choose a pregnant woman's amniotic fluid is enough, and the baby's activity area is larger during the period of four-dimensional color ultrasound examination, the examination effect of four-dimensional color ultrasound will be more accurate and clear, and it is defined as the best examination time of four-dimensional color ultrasound.

Chengdu Xinhua.

Between 5 and a half months to 6 and a half months, you can do 4 dimensions.

At the 28th to 32nd week of pregnancy, the baby's subcutaneous tissue is fuller and the facial expression is richer, especially some malformations that can only occur in the third trimester of pregnancy, which are easier to detect at this time.

During the 22nd week of pregnancy, the doctor said that she would do ultrasound at 22-26 weeks and 28-30 weeks. Generally, at 18-24 weeks of pregnancy, pregnant women need to undergo a color ultrasound deformity examination.

The best time period for deformity examination is 20 weeks to 28 weeks, and many hospitals do not do it after 28 weeks. Generally, the doctor will remind you to make an appointment before 20 weeks, and when the fetus is 5 months pregnant, the limbs and organs of the fetus are more fully developed, and at this time, both the size of the fetus and the state of the amniotic fluid are very suitable for four-dimensional color ultrasound. The baby has a large space to move in the womb, and the bone echo has little effect, and the image is clear.

Pregnant women can have 4D color ultrasound at any gestational week. However, it should be noted that there is currently controversy about whether four-dimensional ultrasound can be done in the first trimester (before 12 weeks of pregnancy), and for the sake of safety, it is recommended to do fetal four-dimensional color ultrasound after 20 weeks of pregnancy.

After 20 weeks of pregnancy, the fetus has developed all its limbs and major organs. The best time for examination is 24-28 weeks of pregnancy, because the fetal structure has been formed at this stage, the size of the fetus and amniotic fluid are moderate, the fetal bone echo effect is relatively small, and the image is clear, so this period is the most ideal period for fetal malformation detection, and the examination can rule out most of the malformations.

The best time for four-dimensional color ultrasound is 5 months to 6 months, because the fetal limbs and major organs have been fully developed at this stage, and the amniotic fluid is richer, which can clearly see the activities of the fetus in the mother's body, which is conducive to deformity detection and growth assessment, and it is easier to collect relatively clear images.

At 12-16 weeks of gestation, there is just beginning to have fetal movement, the fetus's limbs and head can be seen clearly, and when doing four-dimensional color ultrasound, the overall activity of the fetus can be observed to be coordinated, but the only drawback is that the fetus's face is not very clear.

22-26 weeks for single fetuses and 19-21 weeks for twins, this stage of fetal development is basically completed, the amniotic fluid volume is moderate, the fetal movement is frequent, the overall structure of the fetus is clearer than the previous one, and it is also the best time for four-dimensional color ultrasound examination. If it is an expectant mother who wants to engrave a disc, it will be better to do four-dimensional color ultrasound during this period.

Four-dimensional color ultrasound can be done after any 12 weeks of pregnancy, but it should be emphasized that there is currently controversy about doing four-dimensional color ultrasound in early pregnancy (before 12 weeks of pregnancy), and for the sake of safety, it is recommended to do fetal four-dimensional color ultrasound after 20 weeks of pregnancy. Preferably no more than 28 weeks. <>

After 16 weeks of pregnancy, the limbs and major organs of the fetus have all developed, and the best time for examination is 22-26 weeks of pregnancy, and the amniotic fluid is more suitable for fetal malformation screening.

When the fetus is about 24 weeks is the period of rapid development, the structure of the fetus at this period has been formed, the size of the baby and the amniotic fluid are moderate, the activity space in the uterus is larger, the fetal bone echo has less impact, and the image is relatively clear. <>

Due to the different physical conditions of each person, and the time for four-dimensional color ultrasound examination is also different, it is necessary to consult a doctor to determine the examination time <> according to the physical condition of the pregnant woman and the actual situation of the pregnancy

Four-dimensional color ultrasound is generally performed around 20-28 weeks.

Because the gestational week is generally divided into 3 gestational cycles. One is 1-3 months in the first trimester, 4-6 months in the second trimester, and 7-9 months in the third trimester. The four-dimensional color ultrasound effect of these three time periods is also different.

The best time to do 4D color ultrasound is 20-28 weeks. At this time, the limbs, various organs and organs of the fetus have all developed, and the amniotic fluid volume is also more suitable for fetal malformation screening.

Due to the individual differences of pregnant women, it is necessary to contact the doctor for personal time and follow the doctor's instructions. Sometimes the menstrual cycle is inaccurate, and the pregnancy cycle must be reassessed by the clinician. The pregnancy cycle after revaluation is more accurate.

If the gestational age is less than 7 days old, it is necessary to consider whether the fetus is retarded in utero.

When doing fetal screening, the main thing is to measure the mirror image of each organ of the fetus. The skull should be seen for hydrocephalus, anencephaly, and spina bifida. Whether the fetus's heart has a single atrium or a single ventricle.

It is strictly necessary to screen out to see whether the internal organs are turned out, whether there is a loss, whether there is a squeeze injury, and whether the fetus has a foot inversion and foot valgus. It is the main content of screening.

Prenatal check-up schedule and prenatal check-up items

First prenatal check-up: first prenatal check-up at 12 weeks of pregnancy.

Blood pressure, weight, uterine height, abdominal circumference, Doppler, gynecological examination), pregnancy nutrition monitoring, ultrasound, electrocardiogram, MDI secretions.

Second prenatal check-up: 16-20 weeks of pregnancy.

Blood pressure, weight, uterine height, abdominal circumference, Doppler fetal heartbeat), Down's screening, blood routine blood type (ABO RH), urine routine, liver function two and a half, blood glucose, blood calcium, blood lipids, hepatitis C antibody, syphilis reagin, HIV antibody, eugenics four items (cytomegalovirus, herpes simplex virus, rubella virus, toxoplasmosis), trace elements.

Third prenatal check-up: 20-24 weeks of pregnancy.

Blood pressure, weight, uterine height, abdominal circumference, Doppler fetal heartrate), gestational hypertension**, gestational diabetes screening (sugar screening), major malformation screening.

The fourth prenatal check-up: prenatal check-up at 28 to 30 weeks of pregnancy.

Blood pressure, weight, uterine height, abdominal circumference, Doppler fetal heartbeat), B-ultrasound, blood routine, urine routine.

Fifth prenatal check-up: 32-34 weeks of pregnancy.

Blood pressure, weight, uterine height, abdominal circumference, Doppler fetal heartbeat), blood count, urine count.

Sixth prenatal check-up: 36 weeks of pregnancy.

Blood pressure, weight, uterine height, abdominal circumference, Doppler fetal heartbeat), fetal heart rate monitoring.

The seventh prenatal check-up: 37 weeks of pregnancy.

Blood pressure, weight, uterine height, abdominal circumference, Doppler fetal heart rate), fetal heart rate monitoring, color ultrasound, blood routine, urine routine.

The eighth prenatal check-up: 38 weeks of pregnancy.

Blood pressure, weight, uterine height, abdominal circumference, Doppler fetal heartbeat), fetal heart rate monitoring.

The ninth prenatal check-up: 39 weeks of pregnancy.

Blood pressure, weight, uterine height, abdominal circumference, Doppler fetal heartbeat), fetal heart rate monitoring.

10th prenatal check-up: 40 weeks of pregnancy.

Blood pressure, weight, uterine height, abdominal circumference, Doppler fetal heart rate), fetal heart rate monitoring, B-ultrasound, hemagglutination, blood routine, urine routine, electrocardiogram).

Prenatal check-up is an important stage in caring for the health of the fetus, and it is also the first time for the intended parents and the fetus to have a good time.