Detailed Ultrasound At 18 – 23 Weeks

What is a level 3 ultrasound?

The level 3 ultrasound refers to addition of fetal heart examination to the detailed ultrasound examination that is known as the level 2 ultrasound.

What is the best time to have a level 3 ultrasound and what is checked?

It is best performed at 18 to 23 weeks of gestation to anatomically assess the whole body of the fetus including brain, face, spine, heart, stomach, intestines, kidneys, and upper and lower extremities. This assessment also includes the placenta, anatomy of the fetus, volume of the amniotic fluid, and fetal growth. In most of the cases, parents feel relieved that their baby is growing normally. However, any abnormalities of the fetus that might occur less frequently can be better assessed and actions can be taken without delay.


References

Alin Başgül Yiğiter, ve Z.N. Kavak, “Evaluation of Fetal Abnormalities by Two- and Three Dimensional Ultrasound”, Gynaecol Perinatol, 11,2,89-93,(2007).
Kavak ZN, Alin Başgül Yiğiter, The Advantages of 2D Sonography in the Diagnosis and Assesment of Fetal abnormalities. Donald School Atlas of Fetal anomalies, ed. A. Kurjak, FA Chervenak, JM Crrera, Jaypee brothers medical publishers, New Delhi 2007,Chapter29, pp330–351.
Alin Başgül Yiğiter, ve Z.N. Kavak, “Prenatal Diagnosis of Fetal Abnormalities by Ultrasound and Color Doppler”, Gynaecol Perinatol,15,3, 149–156 (2006).
Alin Başgül Yiğiter, Kavak ZN, Fetal Abnormalities. Donald School Textbook of Basic Ultrasound, Kavak Z,Badr A,Adra A editors, Chapter 12; 268–294. Jaypee brothers, 2007.
Kavak ZN, Alin Başgül Yiğiter, The Advantages of 2D Sonography in the Diagnosis and Assesment of Fetal abnormalities. Donald School Atlas of Fetal anomalies, ed. A. Kurjak, FA Chervenak, JM Crrera, Jaypee brothers medical publishers, New Delhi 2007,Chapter29, pp330–351.
Pilu, Gianluigi Pilu, Kypros H. Nicolaides, Diagnosis of Fetal Abnormalities: The 18-23-Week Scan book.
Başgül Yiğiter A, Güdücü N, Kavak ZN, Işçi H, Elçioğlu N. A short rib polydactyly syndrome overlapping both lethal and nonlethal types. Genet Couns. 2012;23(2):231-7.

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