Is weight 2D ultrasound accurate?

This is an automatically translated article.

The article is professionally consulted by Master, Resident Doctor Nguyen Van Anh - Radiologist - Department of Diagnostic Imaging and Nuclear Medicine - Vinmec Times City International General Hospital.
2D ultrasound is the most classic type used to provide necessary information about fetal development as well as early and timely detection of birth defects. However, many pregnant women are still skeptical about the accuracy of this method, so is 2D ultrasound really accurate?

1. What is 2D ultrasound?

Ultrasound is currently the most common imaging method used to monitor pregnancy in medical facilities or obstetric clinics. In particular, 2D ultrasound or 2D ultrasound is a tomographic ultrasound method in which the movement of the transducer on the patient's skin allows to record the acoustic structure of tissues in the body located on the scanning plane of the wave beam. minus. This is a level 1 pregnancy ultrasound method, although it is a relatively old and old method, it is still used in antenatal examination and abdominal and cardiovascular ultrasound.
2D ultrasound is a traditional ultrasound method that gives a black and white image, and has the same level of a negative as a film negative and is not inferior to 3D or 4D ultrasound. 2D ultrasound still provides all the necessary information such as: gestational age, fetal development status, birth defects and length, fetal size, amniotic fluid, placenta, uterine structure, ...

Siêu âm 2D vẫn cung cấp đầy đủ các thông tin cần thiết như: tuổi thai, tình trạng phát triển của thai nhi, các dị tật bẩm sinh và độ dài,...
Siêu âm 2D vẫn cung cấp đầy đủ các thông tin cần thiết như: tuổi thai, tình trạng phát triển của thai nhi, các dị tật bẩm sinh và độ dài,...

2. Is the weight 2D ultrasound standard?

The accuracy of 2D ultrasound actually depends a lot on the professional qualifications of the doctor, so pregnant women should choose reputable medical facilities for prenatal examination and pregnancy ultrasound.
2D ultrasound is used to measure weight, although the weight is known in advance, 2D ultrasound may not be absolutely accurate. This is because 2D ultrasound can only reach the fetus at a certain angle.
In addition, it should be known that in the last months of pregnancy, the fetus will gain weight mainly due to the accumulation of liver glycogen with fat, which is most clearly reflected in the increase in abdominal circumference. Therefore, fetal weight calculation can also be based on the mother's abdominal circumference, so pregnant women do not need to worry too much about the development of the fetus when relying only on ultrasound.

Độ chính xác của siêu âm 2D thực chất phụ thuộc nhiều vào trình độ chuyên môn của bác sĩ
Độ chính xác của siêu âm 2D thực chất phụ thuộc nhiều vào trình độ chuyên môn của bác sĩ

3. How to calculate fetal weight through ultrasound

The method of calculating fetal weight through ultrasound will be based on the following parameters:
FL: Length of femur HC: Circumference of head TAD: Diameter of transverse abdomen AC: circumference of abdomen BPD: Diameter of biceps From there, the fetal weight can be calculated by the formula:
Weight (g) = (13.54 x BPD) + (42.32 x TAD) + (30.53 x FL) – 4213.37
Side Besides, there are many factors that affect the weight of the fetus such as the health of the mother. For example, pregnant women who are obese are also more likely to give birth to a baby much larger than the average person. Therefore, pregnant women need to maintain stable health and proper nutrition to have the best health for both mother and baby when born.
Vinmec International General Hospital offers a Package Maternity Care Program for pregnant women right from the first months of pregnancy with full prenatal check-ups, 2D ultrasound, 3D ultrasound, etc. Periodic 4D and routine tests to ensure that the mother is healthy and the fetus is developing comprehensively. Pregnant women will no longer be alone when entering labor because having a loved one to help them during childbirth always brings peace of mind and happiness.

Please dial HOTLINE for more information or register for an appointment HERE. Download MyVinmec app to make appointments faster and to manage your bookings easily.

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