The anatomy scan, also known as the mid-pregnancy ultrasound, is a detailed imaging examination performed between 18 and 22 weeks of pregnancy. This scan serves as a routine part of prenatal care, providing an in-depth assessment of fetal development. Its purpose is to evaluate the baby’s anatomy, growth, and overall well-being, screening for potential structural anomalies or concerns. This comprehensive look helps healthcare providers ensure the pregnancy is progressing as expected.
The Typical Outcome: What Percentage Are Normal?
The vast majority of anatomy scans reveal reassuring results, indicating that the baby is developing as anticipated. A normal scan signifies that no significant structural abnormalities or major concerns were identified through the imaging process.
While a normal scan is encouraging, it confirms that no issues were detected at the time of the examination. It does not guarantee perfect health, as some conditions may not be visible or develop later in pregnancy. However, the absence of findings on a detailed anatomy scan offers substantial reassurance regarding the baby’s structural development. This allows parents and healthcare providers to continue with routine prenatal care.
Understanding Variations in Scan Results
Even though most scans are normal, some initial anatomy scan results may show variations or be inconclusive. Several factors can contribute to an incomplete or unclear initial scan. For example, the baby’s position during the ultrasound can affect visibility, making it difficult to obtain clear images of organs and structures. Maternal body habitus can also interfere with sound waves, leading to less clear images. Poor image quality due to technical issues or the presence of gas in the intestines can obscure views of internal structures.
In such cases, an initial “non-normal” or incomplete result often means a follow-up scan is needed to get clearer views or to confirm findings. These situations do not automatically indicate a serious problem, but rather a need for further investigation to ensure a complete assessment.
Next Steps After the Anatomy Scan
Following an anatomy scan, healthcare providers will discuss the results with the expectant parents. If the scan is normal and no concerns are identified, routine prenatal care continues as planned. This provides reassurance and confirms healthy progression.
If the scan yields variations or atypical findings, or if it is inconclusive, further steps are recommended. This includes a follow-up ultrasound to obtain clearer views or re-evaluate a specific finding. Sometimes, a consultation with a specialist may be suggested for further evaluation. While additional diagnostic tests like amniocentesis or chorionic villus sampling may be discussed, these are considered only when specific concerns warrant them. Open communication with healthcare providers ensures the best possible care for both the parent and the baby throughout this process.