Many expectant mothers and fathers are very curious about the unborn baby. In addition, many hospitals and even non-medical institutions have introduced [four-dimensional photos]. Unlike the black B-ultrasound photos during the prenatal examination, people who do not understand what can also see the facial features and movements of the fetus, giving people a lot of joy. In addition, many organizations say that 4D is [the most advanced ultrasonic diagnostic technology at present] and has great advantages in finding various abnormalities in the fetus. Many mothers regard this examination as a necessary examination during pregnancy. In fact, purely technically speaking, three-dimensional and four-dimensional color Doppler ultrasound is essentially no different from ordinary B-ultrasound: Three-dimensional is to collect a lot of B-ultrasound Read More …