How many months of gestation can a fetus be detected with an ultrasound for abnormalities and defects?

Patient's question:

Detailed medical condition and consultation purpose: Doctor, I would like to ask when can an ultrasound be performed during pregnancy to detect any abnormalities or defects in the fetus? Thank you

Doctor's answer:

During pregnancy, the organs developing in the child differ at different stages of pregnancy. Throughout the entire pregnancy, regular check-ups are necessary. Generally, it is recommended to have a prenatal check-up once a month, so you don't need to worry about this. Regular prenatal check-ups will suffice in the future.
Generally, doctors advise women with signs of genetic risks to rest in bed and avoid sexual activity. Additionally, patients should pay attention to creating a comfortable environment, which is beneficial for rest. Wishing the patient a healthy delivery.