When is the time for B-ultrasound to check pregnancy

For many friends who have just become pregnant, they want to rush to do a B-ultrasound check for pregnancy. In fact, there is no need to be so anxious, because if the pregnancy is too early, the B-ultrasound examination cannot show it. So when is the best time to do an ultrasound to check for pregnancy? Next, this article will introduce to you the relevant content about when to do B-ultrasound check for pregnancy, for your reference only.

When is the best time to check pregnancy with ultrasound? Ultrasound examination can only see the gestational sac after 5 weeks of pregnancy, and the detection rate of the gestational sac reaches 100% at 6 weeks of pregnancy. The embryo can be seen at 6-7 weeks of pregnancy. At 49 days of pregnancy, when the diameter of the embryo is 2mm, the primitive heart tube beating can be seen. At 8 weeks of pregnancy, the human shape begins to take shape. All organs are formed at the 14th week, hair begins to appear at the 15th week, and the uterus is about 16CM at the 16th week. At the end of the 17th week, the baby's movements are restricted and fetal movements occur. The second scan (to determine gender) is done at the end of week 21. The gender will be known at the end of the 22nd week. If you do an ultrasound too early, it will not be easy to see the shadow of the gestational sac because it is too small. Not every doctor can make an accurate diagnosis, and it depends on the experience of the person doing the imaging. The ideal time to do an ultrasound pregnancy check is between 8 and 10 weeks of pregnancy. Doing B-ultrasound too early is not conducive to embryonic development. It is best to avoid doing B-ultrasound too early or multiple times.

Do I need to hold my urine when doing an ultrasound during pregnancy?

Generally, in the early stages of pregnancy (usually the first three months), the uterus is not large enough and has not protruded from the pelvic cavity, so you need to hold your urine and use a full bladder to help see the uterus, fallopian tubes, ovaries, etc. In the middle and late stages of pregnancy, there is generally no need to hold urine, unless there are special circumstances, such as a low placenta or unexplained vaginal bleeding, in which case a full bladder is needed to clearly see the tissue and blood flow in the lower part of the uterus.

Types of B-ultrasound during pregnancy: The most common ultrasonic examination instruments are B-ultrasound and ordinary color ultrasound. There are also three-dimensional color ultrasound and four-dimensional color ultrasound, as well as vaginal B-ultrasound. In addition, ultrasonic level meters and ultrasonic liquid level meters are also mainstream ultrasonic instrument products. In fact, three-dimensional and four-dimensional ultrasound examinations cannot be fully used as system screening. To truly observe whether the fetus has any deformities, two-dimensional ultrasound observation is used. Three-dimensional ultrasound has its advantages in facial imaging, but many deformities cannot be fully detected by three-dimensional ultrasound. It is just a supplement to two-dimensional ultrasound. Generally, during the early screening stage, a three-dimensional B-ultrasound can be performed to observe the fetus as a whole. Three-dimensional B-ultrasound can also be chosen when doing systematic screening in the second trimester. However, it is not recommended during late pregnancy.

The above is the introduction about when is the best time to check pregnancy by B-ultrasound. I believe that after reading the above introduction, you already know when is the best time to do an ultrasound check for pregnancy. From the above introduction, we can know that the best time to do an ultrasound check on pregnancy is 8-10 weeks. I hope that the introduction in this article will be helpful to friends who want to learn more about this knowledge.