Ultrasonogram of the spleen and liver. Ultrasonogram of the spleen and liver in a 61-day-old Holstein-Friesian calf viewed from the ventral midline. 1 Ventral abdominal wall, 2 Spleen, 3 Liver, 4 Reticulum, Cr Cranial, Cd Caudal. (depth of the image = 8 cm).