B-ultrasound image viewing tutorial

B-ultrasound examination is often done during pregnancy. B-ultrasound examination is a very popular and relatively excellent

Pregnancy B-ultrasound viewpoint example tutorial

Fetal heartbeat: if present and strong, everything is normal; if absent and weak, there is an abnormality. The normal fetal heart rate is between 120-160 beats per minute.

Gestational sac: The gestational sac is only seen in the early stages of pregnancy. Its size is 2 cm in diameter at 1.5 months of pregnancy and about 5 cm at 2.5 months, which is normal. It is normal for the gestational sac to be located at the fundus, front wall, back wall, top, or center of the uterus; it is normal for the shape to be circular, oval, and clear; if the gestational sac is irregular in shape, unclear, and located at the bottom, and the pregnant woman also has abdominal pain or vaginal bleeding, she may have a miscarriage.

Fetal head position: The outline is normal, damage and deformation are abnormal, and there is no movement of the brain center line and no hydrocephalus. BPD means the biparietal diameter of the fetal head, which should be 9.3 cm or more when the pregnancy reaches full term. According to general regularity, after the fifth month of pregnancy, it is basically consistent with the pregnancy phase. In other words, the BPD is about 7.0 cm at the 28th week of pregnancy (7th month), about 8.0 cm at the 32nd week of pregnancy (8th month), and so on. After the eighth month of pregnancy, an average increase of about 0.2 cm per week is normal.

Fetal movement: if there is strong movement, it is normal; if there is no movement or it is weak, it may be that the fetus is sleeping, or it may be abnormal and needs to be analyzed comprehensively in combination with other items.

Embryo: The location indicates the location of the embryo in the endometrium; the normal thickness of the embryo should be between 2.5 and 5 cm; the thickness is divided into grade III on the examination report. Grade I is the early stage of placental maturation, with uniform echoes, and this change can be seen at 30-32 weeks of pregnancy; Grade II indicates that the embryo is close to maturity; Grade III indicates that the embryo is already mature. The closer to full term, the more perfect the embryo is and the more uneven the echo is.

Fetal umbilical cord: Under normal circumstances, the fetal umbilical cord should float in the amniotic fluid of the pregnant woman. If the fetal umbilical cord image is seen on the fetal neck, it may be that the fetal umbilical cord is wrapped around the neck.

Amniotic fluid of pregnant women: The depth of amniotic fluid is normal between 3-7 cm. More than 7 cm means that the amniotic fluid of pregnant women has increased, and less than 3 cm means that the amniotic fluid of pregnant women has decreased.

Spine: If the fetal spine is intact, it is normal; if it is damaged, it is abnormal, and the spine may be deformed.

Femoral head length: refers to the length of the fetus's thigh bone. Its standard value is about 2-3 cm different from the BPD value of the corresponding month of pregnancy. For example, if the BPD is 9.3 cm, the femoral head length should be 7.3 cm; if the BPD is 8.9 cm, the femoral head length should be 6.9 cm, etc.