Figure 4From: The BUDDY (Bedside Ultrasound to Detect Dehydration in Youth) studyReceiver operating characteristic curves for the ultrasound measured inferior vena cava to aorta ratio, the ultrasound measured inspiratory inferior vena cava collapsibility, and physician gestalt. IVC/Aorta, inferior vena cava to aorta ratio; IVC, inferior vena cava; MD, physician.Back to article page