What are the differences between four-dimensional and three-dimensional?

Patient's question:

No

Doctor's answer:

Simply put, it's four-dimensional motion, while three-dimensional cannot be dynamic. Three-dimensional is like a photo, and four-dimensional is like a video. Four-dimensional color Doppler can observe the growth and development of the fetus in the uterus from multiple directions and angles, enabling early diagnosis of congenital surface malformations of the fetus.