Pregnancy ultrasound is mainly to check the growth and development of the fetus, as long as the development is consistent with the corresponding gestational week, it is normal.
Ultrasound in early pregnancy is mainly to determine intrauterine pregnancy and to rule out ectopic pregnancy. At the same time, the size of the gestational sac is consistent with the number of days since menopause. At 6 weeks of gestation, the germ and primitive heart tube pulsation can be seen. Measurement of fetal head and hip length at 11-13+6 weeks of gestation can provide a more accurate estimate of gestational week, while the thickness of fetal nuchal translucency can be detected to make a preliminary judgment of whether there is a possibility of fetal malformation.
Ultrasound examination in mid-pregnancy can understand the development of the fetus by measuring the biparietal diameter, head circumference, abdominal circumference and femur length and other indicators. Ultrasound can also be used at 20-24 weeks of gestation for fetal system examination to screen for fetal structural malformations.
Ultrasound in late pregnancy can not only check fetal development, but also assess the placenta, amniotic fluid, and fetal delivery style to prepare for labor and delivery.
Pregnant women need to have regular ultrasound examinations, and after the examination, the report card will be submitted to the doctor, who will make pregnancy guidance according to the ultrasound list and the condition of the pregnant woman.