When is the Best Time for a Detailed Fetal Anomaly Scan?

Generally, there is no specific best time for large-scale fetal anomaly screening. If you want to conduct large-scale fetal anomaly screening, it is recommended to conduct the examination between the 20th and 24th weeks of pregnancy. Large-scale fetal anomaly screening belongs to prenatal ultrasonography, mainly screening for chromosomal abnormalities, monogenic diseases, congenital malformations, genetic syndromes and other diseases in fetuses. During the 20th to 24th weeks of pregnancy, the fetal development has already taken shape, and the anatomical structure of the fetus and the screening for fetal malformations can be examined. If large-scale fetal anomaly screening is performed after the 24th week of pregnancy, the results may not be accurate. However, if the examination is performed before the 20th week of pregnancy, it may be difficult to judge the fetal development and accurately determine the presence of genetic or chromosomal diseases. There is no radiation generated during the large-scale fetal anomaly screening process, which usually does not cause significant harm to the fetus. Therefore, it is recommended that women who are suitable for the gestational period should undergo large-scale fetal anomaly screening in a timely manner. This examination generally does not require fasting, and you can eat light food appropriately, such as millet porridge and noodles, to replenish energy for your body. If fetal malformations are found after the examination, it is necessary to cooperate with doctors promptly and take reasonable treatment measures.