What are the side effects of doing B ultrasound frequently?

B-ultrasound is a medical technology that can provide a good glimpse into the internal conditions of the human body, so many women go to the hospital regularly for B-ultrasound examinations when they are pregnant. The main principle of B-ultrasound is to use different frequencies of ultrasonic waves to reflect the internal conditions of the body. Therefore, some pregnant women worry about side effects on their bodies when doing B-ultrasound. So will too much B-ultrasound have side effects on a person's body?

Does frequent B-ultrasounds have any effect on the fetus?

The B-ultrasound currently used in clinical practice emits a sound intensity of less than 10mW/cm2 from its probe, and the ultrasound examination usually takes only 5-10 minutes, with the detection time for each organ being even shorter. Therefore, B-ultrasound examination poses little harm to the fetus and will not affect its physical development. Therefore, pregnant women do not need to be afraid of B-ultrasound examinations during pregnancy. Timely B-ultrasound examinations are an important means to ensure the normal development of the fetus. However, if the B-ultrasound time exceeds 20 minutes, it will have irreversible adverse effects on the fetus. Therefore, pregnant women should undergo appropriate B-ultrasound examinations according to the doctor's requirements and control the number of B-ultrasound examinations.

How often should pregnant women have B-ultrasound?

2. Between 18 and 24 weeks of pregnancy, have a 3D B-ultrasound to exclude fetal anomalies. This is a very detailed examination of the baby, including all organs. This is very important and must be done.

3. At around 32 weeks, there is also a two-dimensional B-ultrasound, which is mainly to check the baby's development, with a focus on the baby's biparietal diameter, femur length, amniotic fluid index, placental maturity, fetal position, etc.

4. When the baby is about to be born, there will be another B-ultrasound, which is usually done after 36 weeks. The baby's fetal position, amniotic fluid, biparietal diameter, and femur length are also monitored. These data are all to see whether the baby can be delivered naturally.

Normally, pregnant women only need to undergo four B-ultrasounds. If the doctor recommends further examination, the number of B-ultrasounds can be increased appropriately. Although the impact of B-ultrasound on the fetus is very small, it still exists. Pregnant women should not blindly undergo multiple B-ultrasounds. Every parent is worried about their children, but we also need to believe that babies are strong and just focus on taking care of the baby.