A pregnancy ultrasound is one of the safest and most recommended image diagnostics tests that provides high-quality images of the foetus and is the best diagnostics tool to evaluate foetal development. 

The pregnancy ultrasound works on the principles of sonar, the same technology used by navies to detect planes and ships. 

As this ultrasound sub-type is devoid of radiation unlike other imaging tests, it is considered to be the safest image diagnostics tool for pregnant women and unborn babies.

The pregnancy ultrasound is conducted during all three trimesters for the following reasons. 

First-trimester pregnancy ultrasound

• To confirm pregnancy
• To check the foetal heartbeat
• To check the mother’s pelvis region
• To check for abnormalities in the foetus

Second & third-trimester pregnancy ultrasound

• To monitor foetal development & position
• To measure the amniotic fluid in the womb
• To check for foetal-congenital abnormalities 
• To check the cervix’s length
• To check the foetus’s oxygen supply

Four main types of pregnancy ultrasound

• 3D ultrasound
• 4D ultrasound
• Transvaginal ultrasound
• Foetal echocardiography

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