What is the average time frame for fetal ultrasound morphology scans during pregnancy?

The average time frame for fetal ultrasound morphology scans, also known as the anatomy scan, typically occurs between 18 to 20 weeks of gestation. This timing is critical as it allows for a thorough assessment of the fetal anatomy, including the evaluation of major organs and structures, which are sufficiently developed by this stage of pregnancy. Conducting the scan within this time frame maximizes the accuracy of identifying any anatomical abnormalities that may be present, allowing healthcare providers to inform expectant parents and plan for any necessary interventions or monitoring.

In contrast, performing the scan too early, such as at 10 to 12 weeks or 14 to 16 weeks, would not provide comprehensive visualization, as many anatomical features are still in the early stages of development and may not be adequately assessed until later in the second trimester. Scanning at 22 to 24 weeks is generally considered too late for an initial detailed anatomy scan, as it is preferred to identify potential issues earlier in the pregnancy when there are more options for management and care.