what is the use of B-scan Ultrasound

B-scan during pregnancy is very important. The B-Ultrasound in the first trimester is an important basis for confirming pregnancy. Check whether the fetus is developing for ectopic pregnancy, the size of the gestational sac, the size of the fetal bud, and whether there is fetal heart beat and yolk sac. The B-ultrasound in the second trimester can check the facial, nervous system, digestive system, urinary system and other abnormalities. B-ultrasound in the third trimester can diagnose placenta previa, placental maturity, amniotic fluid AFI, and decide whether to terminate the pregnancy. Therefore, doing a B-ultrasound examination at the right time has a great effect on determining whether the fetus is growing healthy.

Types and uses of B-scan Ultrasound

There are two types of gynecological B-ultrasound: abdominal B-ultrasound and vaginal B-ultrasound

The main purposes of abdominal ultrasound are as follows:

1. Routine physical examination in gynecology-observe：the size of the ovaries, whether there are cysts, solid masses, etc., while observing whether there are uterine fibroids, adenomyosis, endometriosis, endometrial polyps.

*Note: B-ultrasound cannot diagnose endometrial atypical hyperplasia or endometrial cancer. Diagnostic curettage or endometrial biopsy is required.

2. Examination during pregnancy

Early pregnancy: It can be used as a basis for the diagnosis of early pregnancy. B-ultrasound is an important basis for diagnosing pregnancy. For people whose last menstrual period is uncertain, B-ultrasound is the most accurate method. The size of the fetal sac can be calculated according to the results of the B-ultrasound, and the length of the fetal head to the buttocks can be used to calculate the number of weeks of pregnancy and the expected date of delivery. In addition, it can also know whether there is fetal heartbeat and yolk sac, so as to discover the development of the embryo in time abnormal situation.

Second trimester: B-ultrasound can be used to check the deformity. Color Doppler ultrasound can help doctors directly diagnose congenital malformations of the fetus, including surface malformations and visceral malformations, such as neonatal congenital heart disease, cleft lip and palate, edema, polydactyly (toe) and external ear malformations can be detected. At the same time, it can also determine the precise position of the fetus in the uterus.

Third trimester: During this period, the B-ultrasound results are mainly used to assess the size and height of the fetus, observe the amount of amniotic fluid and the function of the placenta, and whether the fetus has an umbilical cord around the neck. If there is oligohydramnios, placental calcification, and fetal umbilical cord around the neck, it is necessary to consider whether to continue pregnancy in combination with clinical practice.

3. It is used to check the recovery of the uterus after abortion, after drug abortion, after induction of labor, and after delivery.
4. Observe follicular development and endometrial thickness for patients with amenorrhea, menstrual disorders or functional uterine bleeding.
5. Regular review of patients with uterine fibroids and ovarian cysts.
6. Assess reproductive function, observe follicle development and ovulation, and measure the thickness of the uterus. Now many unmarried and unborn girls are curious to evaluate their reproductive function through B-ultrasound.
7. Diagnose congenital ovarian or uterine dysplasia, immature uterus or malformed uterus, etc.

The main uses of vaginal ultrasound are as follows:

The sensitivity of vaginal B-ultrasound is higher than that of abdominal B-ultrasound, and it is especially suitable for observing follicles.

1. Assess reproductive function-observe the development of follicles and ovulation, and measure the thickness of the uterus. At the same time, observe whether there are ovarian cysts or solid masses, and whether there are fibroids in the uterus. The effect is better than that of the abdomen.
2. Diagnose polycystic ovary.
3. Diagnose ovarian infertility or uterine infertility.
4. Track follicle development after ovulation induction and observe ovulation.
5. Used in assisted reproductive technology such as artificial insemination, test-tube embryos, embryo transfer, etc.