A 4D ultrasound during pregnancy should be performed between 23 and 28 weeks. Before the procedure, it is important to make an advance appointment and prepare some food to avoid hypoglycemia or other symptoms caused by hunger. Additionally, it is recommended to choose a reputable large hospital for the 4D ultrasound as this will result in more accurate screenings and significantly reduce the risk of birth defects. Here are some key points to note:

1. Timing of the 4D Ultrasound

The 4D ultrasound should be performed between 23 and 28 weeks of pregnancy, with the primary objective of screening for fetal abnormalities.

2. Eating Before the Ultrasound

It is crucial to have a meal before the ultrasound as the 4D ultrasound focuses on detecting fetal abnormalities, which may take a relatively long time. Skipping a meal may lead to hypoglycemia in pregnant women.

3. Advance Appointment

It is advisable to make an advance appointment for the 4D ultrasound due to the extended examination time and the high number of pregnant women undergoing the procedure. This ensures that you can arrive at the hospital at the scheduled time for your examination.

4. Choosing a Reputable Hospital

When undergoing the 4D ultrasound, it is important to select a reputable large hospital with advanced equipment and experienced doctors to ensure accurate results.

5. Preparing for the Appointment

Before the examination, make sure to bring your previous pregnancy check-up records for comparison. It is also essential to make an advance appointment and prepare for the hospital visit.

6. Snacks for the Day

On the day of the examination, it is advisable to prepare some snacks as the 4D ultrasound may take a relatively long time, and there may be extended waiting periods.