Level II ultrasounds are typically recommended between 18 and 22 weeks of pregnancy to see details of organs and limbs from head to toe. If you're having multiple pregnancies, each fetus will receive its own scan. Barring any specific high-risk issues, the following areas are examined to rule out birth defects and other anomalies or red flags: - Brain structures - Neck - Face structures - Thorax - Bones - Abdominal organs - Limbs among many others.