In the last few decades, the development of new ultrasound techniques has allowed direct visualization of the fetus in utero ( 1, 2).ĤD ultrasound has recently been introduced in medical practice and complements 2D and 3D examination by obtaining images in real time. In the past, registration of fetal movements and fetal heart rate auscultation were the only methods of the follow-up of fetal well being. This can make the difference between normal and abnormal brain development and may be used for early diagnosis of neurological disorders that become manifest in perinatal and postnatal periods. Results: After 15-20 minutes 4D ultrasound examination, we found a pattern of fetal behavior for each trimester of pregnancy.Ĭonclusions: Dynamic evaluation of fetal behavior reflects directly the processes of maturation and development of the central nervous system. The analyzed parameters for each trimester of pregnancy can be used for performing antenatal neurodevelopment test, used the first time by Professor Kurjak. For the first trimester of pregnancy we assessed eight types of fetal movements and for the second and third trimesters 14 types of fetal movements and facial expressions. Material and Method: The study group included 144 healthy pregnant women with single pregnancies between 7-38 weeks of gestation. The assessment of fetal behavior by 4D ultrasound could allow distinction between normal and abnormal fetal behavior patterns which might make possible the early recognition of fetal brain impairment.Īim: Assessment of fetal movements throughout the pregnancy using 4D ultrasound. Analysis of the dynamics of the fetal behavior with morphological studies has lead to the conclusion that fetal behavior patterns are directly reflecting development and maturation of the central nervous system. Fetal behavior is defined as any fetal action seen by the mother or fetus diagnosed by objective methods such as cardiotocography (CTG) or ultrasound.