Figure 2
From: Bacillus Calmette-Guérin vaccination, thymic size, and thymic output in healthy newborns
Sonograms. Ultrasonic assessment of thymic size. An immunological evaluation within The Danish Calmette Study randomizing infants to BCG or no BCG at birth. (a) In a horizontal scanning plane the thymus is seen as an echo-poor structure surrounded by its echo-rich capsule surrounding the big vessels (Pulmonary artery and Ascending aorta).The largest transverse diameter of the thymus is measured (dashed line). (b) In a sagittal scanning plane, the area of the largest lobe is assessed (dashed line).
