Pregnancy Ultrasound Examinations

Ultrasound examinations performed during pregnancy play a crucial role in monitoring fetal development and assessing the mother’s health. It is important to clearly distinguish between routine trimester ultrasound scans and so-called genetic ultrasound examinations, as these serve different purposes, follow different evaluation criteria, and do not necessarily overlap. Due to the varied terminology used, we summarize all relevant examinations below.

Trimester Ultrasound Examinations – The Core Pregnancy Screenings

During pregnancy, three routinely recommended trimester ultrasound examinations are typically performed. Their primary goal is to monitor the fetus’s overall development, growth, and anatomical structure at different stages of pregnancy.

First Trimester Ultrasound (Weeks 11–13)

The first trimester ultrasound focuses on:

• determining the exact gestational age,

• confirming fetal viability and heartbeat,

• assessing basic anatomical structures,

• confirming or excluding multiple pregnancy.

This examination is not a genetic test. However, certain measured parameters (such as nuchal translucency) may later be used as part of a genetic risk assessment.

Second Trimester Ultrasound – Genetic / Detailed Anatomy Scan (Weeks 18–22)

The second trimester ultrasound is the most comprehensive imaging examination during pregnancy. During this scan:

• the fetal organs are examined in detail,

• the development of the heart, brain, spine, limbs, and internal organs is assessed,

• the position of the placenta and the amount of amniotic fluid are evaluated.

This examination is often referred to as a genetic ultrasound, as certain developmental abnormalities may indicate an increased risk of genetic conditions. However, it does not provide a definitive genetic diagnosis on its own.

Third Trimester Ultrasound (Weeks 30–32)

The purpose of the third trimester ultrasound is to:

• monitor fetal growth,

• determine fetal position and estimate birth weight,

• assess the condition of the placenta and umbilical cord,

• support preparation for delivery.

This examination primarily focuses on functional assessment and growth monitoring.

Genetic Ultrasound – Targeted Risk Assessment

(Bookable separately on our website)

A genetic ultrasound examination is not the same as routine trimester ultrasounds.
Its purpose is to assess the risk of certain chromosomal abnormalities and developmental disorders, rather than to establish a final diagnosis.

Genetic ultrasound examinations:

• are usually performed in the first or second trimester,

• focus on specific measurement points and anatomical markers,

• are often combined with laboratory or genetic blood tests (such as the combined test or NIPT).

It is important to emphasize that:
👉 not every trimester ultrasound is a genetic examination (genetic scans can be booked separately on odoktor.hu),
👉 and not every genetic test includes an ultrasound examination.

Safe, Painless Fetal Diagnostics

Pregnancy ultrasound examinations are:

• completely painless,

• free of radiation exposure,

• safe for both mother and fetus.

All examinations are evaluated by a qualified specialist. If necessary, additional tests may be recommended — always prioritizing the health and well-being of both the expectant mother and the baby.