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Measurements

Pulmonary Artery
  • Measure main PA at takeoff of the right PA
Spleen
  • Calculator for spleen length based off height
  • Measure in longest axis
Liver
  • There’s actually no well-defined cutoff for hepatomegaly
  • Obviously if massive can call hepatomegaly but Norris would recommend not routinely measure the liver
Abdominal aorta
  • < 3 cm
  • Can remember that common iliacs should be < 1.5 cm since 1.5+1.5=3
Common iliacs
  • < 1.5 cm