Figure 3From: Systemic-to-pulmonary collateral flow in patients with palliated univentricular heart physiology: measurement using cardiovascular magnetic resonance 4D velocity acquisitionSystemic lower to upper body flow ratio in patients and controls. Inferior vena cava to total systemic venous flow ratio [IVC:(IVC+SVC)] to show the lower to upper body flow relationship changes with body weight. The patient’s data (circle) and trend-line (R2=0.406) shows similar distribution to the control data (squares).Back to article page