Patient's question:
How long into pregnancy can an ultrasound detect the true number of pregnancy days? Are there other methods besides ultrasound to accurately calculate the pregnancy duration? Does an ultrasound have any effect on the fetus?Doctor's answer:
Hello, ultrasound is a necessary means to rule out fetal abnormalities and confirm intrauterine pregnancy, etc. Therefore, an ultrasound examination should be performed, usually not exceeding 5 times in total, unless the situation is special.