What is the difference between 3D and 4D for pregnant women?

Pregnant women need to do a lot of tests during pregnancy. Among the many tests, pregnant mothers will worry about whether these tests are necessary. In other words, whether too many of these tests will have any impact on the fetus. Just like B-ultrasound, many people don’t know the differences between three-dimensional and four-dimensional B-ultrasound examinations. Let’s take a look.

The difference between 3D and 4D color Doppler ultrasound for pregnant women

Most hospitals perform fetal abnormality screening ultrasounds based on three-dimensional or four-dimensional color ultrasound. The difference between three-dimensional color ultrasound and four-dimensional color ultrasound lies mainly in the "time dimension". In other words, three-dimensional color ultrasound is a photo, which is static, while four-dimensional color ultrasound is a video, which is dynamic. It can allow expectant mothers to see a series of movements of the fetus, so the four-dimensional view will be clearer and easier to see. Three-dimensional color ultrasound can only be a photo at a certain point in time, while four-dimensional color ultrasound can be made into a continuous video like a DV and can be burned to a disc. Three-dimensional color ultrasound and ultra-high-definition four-dimensional color ultrasound have the same effect of diagnosing fetal abnormalities, but ultra-high-definition four-dimensional color ultrasound is more accurate. Three-dimensional color ultrasound focuses on observing whether the internal organs are abnormal and eliminating structural abnormalities. The four-dimensional color ultrasound can also observe whether the motor nerve system is normal and whether the movement is harmonious.

What can be checked with three-dimensional color ultrasound?

(1) Measure the age of the fetus

(2) Analyze the growth and development of the fetus

(3) Examination of embryos for abnormalities

(4) Check if there is any abnormality in the structure of the uterus

(5) Conducting precise embryo positioning

(6) Check for abnormalities in the fetus

(7) Check for abnormal bleeding

(8) Comments on twins or high-risk pregnancies

(9) Testing for ectopic pregnancy and other abnormal pregnancies

(10) Examination of tumors and fibroids in the uterus and ovaries

Both three-dimensional and four-dimensional examinations are very important. After reading the above content, I believe you already have a certain understanding of the difference between the two. The three-dimensional examination should be done earlier than the four-dimensional examination, so generally after the three-dimensional examination, a four-dimensional examination will be done around 26 to 28 weeks of pregnancy. The four-dimensional examination in some hospitals is colorful, which is more vivid.