**The importance of NT ultrasound** Parents who decide to have a child always worry that their child does not have any special disease. Today, there are different ways in different stages of pregnancy that have made pregnancy conditions easier. NT ultrasound is used to diagnose Down syndrome and has solved many concerns for the birth of these children. ### **Steps of NT ultrasound** NT ultrasound is a screening test that measures the fluid behind the neck of babies. This test must be performed between 11 weeks and 13 weeks and 6 days. This liquid is present in the back of the neck of all babies, and this test is not for the presence of this substance, but it determines its amount, which is more in the case of Down syndrome. This ultrasound cannot be performed earlier because this liquid has not yet formed and if it has passed this time, the liquid behind the neck of the fetus has been absorbed and cannot be measured. **methods of NT ultrasound** NT ultrasound is done in two ways. It is possible to perform ultrasound from the abdomen, and they do this through vaginal ultrasound of the mother, which does not harm the mother and the fetus, and the pain is tolerable. ### **Precision in NT ultrasound** Something important to keep in mind when doing various pregnancy tests is how accurate these tests can be. **NT** ultrasound can accurately predict up to 75%. Usually, this test is combined with a blood test, which can be 90% sure of the result. In general, the amount of error in NT sonography has been reported up to 5% in limited cases. ### **What things can be detected by pregnancy ultrasound?** With this test, the organs of the fetus can be seen, including the spine, head, hands and feet. Other problems that can be seen in this test are the damage to the abdominal wall and skull of the fetus, which can be seen in this period of the fetus's age. In addition to genetic problems, ultrasound determines the age of the fetus and the exact time of natural delivery. It is also possible to check the nasal bone because Down syndrome affects this part as well. **To get accurate results from NT ultrasound, visit an accurate ultrasound center to perform ultrasound with appropriate equipment and experienced technician. Contact numbers for Dr. Saif's ultrasound center: 88553310 Dr. Saif's sonography Instagram page** ### **Recommendations for performing NT ultrasound** When women get pregnant at an advanced age, or have genetic problems, and have had examples of this disease in their relatives, or sperm coagulation has not been done in the right conditions, this ultrasound must be done. Even in cases of mothers who have not been under control in terms of nutrition and the mother may have deficiencies in her body's necessary substances, this test is performed with the coordination of a doctor under the control of the mother. Due to the fact that today many conditions will affect the health of the fetus, it is very important that the steps to control the health of the fetus are carried out at the right time, of which **NT** ultrasound is one of them.