​Is three-dimensional better or four-dimensional better

In life, many pregnant women need to do many prenatal checkups during pregnancy, because prenatal checkups are very important for pregnant women. Prenatal checkups can not only observe the healthy growth and development of the fetus in the body, but also determine what substances the fetus lacks during the growth process. During the prenatal checkup, four-dimensional color ultrasound and three-dimensional color ultrasound must be done. So, is three-dimensional color ultrasound better or four-dimensional color ultrasound?

What are three dimensions and four dimensions?

Just like everyone’s mobile phones have photo and video recording functions, all stereo ultrasound machines have three-dimensional and four-dimensional functions. Three-dimensional refers to static stereoscopic imaging, and four-dimensional refers to dynamic stereoscopic imaging. The only difference is that the doctor presses different operation buttons when operating.

Ultrasound machines are not divided into three-dimensional machines and four-dimensional machines. Currently, all ultrasound machines with stereoscopic imaging capabilities also have these two functions.

What do three-dimensional and four-dimensional things do?

Three-dimensional color ultrasound surface imaging is used in obstetric examinations. It can not only observe the growth process of the fetus, but also check the changes in the placenta, amniotic fluid and umbilical cord. More importantly, it can be used as the main means of diagnosing fetal malformations. Due to the large grayscale contrast between tissue structure and liquid, the three-dimensional morphology, surface features, and spatial position relationship of the suspicious structure can be clearly displayed, providing a three-dimensional image of the fetus in the uterus. Three-dimensional reconstruction includes surface imaging, transparent imaging and multi-plane imaging modes.

In the past, B-ultrasound equipment could only check the physiological indicators of the fetus, but four-dimensional color ultrasound can also examine the fetus's body surface, such as cleft lip, spina bifida, brain, kidney, heart, and bone dysplasia, so as to provide treatment as early as possible. Give birth to a smart and healthy baby, and make photos or DVDs of the baby's appearance and movements. It is no longer a fantasy to let your baby have the most complete 0-year-old photo album.

Which is clearer, three-dimensional or four-dimensional? Whether it is three-dimensional or four-dimensional, they are complex graphics obtained by synthesizing two-dimensional images through computers. The clarity of the two-dimensional image of the machine determines whether the three-dimensional or four-dimensional images are clear.

The clarity of the two-dimensional image depends on the resolution of the machine. Currently, the two-dimensional resolution of all ultrasound machines used for screening has reached 0.1 mm, which has exceeded the needs of our ultrasound doctors. Therefore, clarity is not a problem. It is just like when we buy a car, no one cares about the maximum speed of the car, because the speed of every car currently exceeds the needs of users. Therefore, questions such as which is clearer, three-dimensional or four-dimensional, are not real problems.