ARDMS (American Registry for Diagnostic Medical Sonography) Practice Test

The anatomy ultrasound, often referred to as the anatomy scan or mid-pregnancy ultrasound, is typically performed during the second trimester, around 18 to 22 weeks of gestation. This timing is critical because, by this stage, the fetus has developed sufficiently, allowing for a thorough examination of its anatomical features, including organ development and physical measurements.

During this scan, ultrasound technicians evaluate vital aspects such as the heart, kidneys, spine, and limbs, providing important information about the baby's growth and detecting any potential abnormalities. While ultrasounds can be performed in earlier or later trimesters, the second trimester is optimal for a comprehensive assessment of fetal anatomy, as the fetus is larger and more developed, making it easier to visualize and assess anatomical structures accurately.