Width of common bile duct

• < 8 mm (< 10 mm after cholecystectomy) Attenuation values:

• Kidneys: 35-45 HU without contrast medium; renal cortex after contrast medium: ca. 140 HU

• Adrenal glands: 25-40 HU without contrast medium

• Blood vessels: ca. 40-55 HU without contrast medium

• Gallbladder contents: 0-25 HU

• Spleen: width 7-10 cm, height 4-6 cm, length 11-15 cm

• Adrenal glands (variable): crural thickness < 10 mm

• Gallbladder: horizontal diameter up to 5 cm (> 5 cm is suspicious for hydrops)

• Diameter of abdominal aorta: approx. 18-30 mm

• Lymph nodes larger than 1 cm are suspicious for pathology.

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