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Table 3 Calculated parameters blood flow parameters

From: Systemic-to-pulmonary collateral flow in patients with palliated univentricular heart physiology: measurement using cardiovascular magnetic resonance 4D velocity acquisition

  Derived equations
Systemic blood flow (Q S )  
Traditional (Systemic arterial supply) AO
New (Systemic venous return) SVC + IVC
Pulmonary blood flow (Q P )  
Traditional (Pulmonary arterial supply) RPA + LPA
New (Pulmonary venous return) RPV + LPV
Systemic-to-pulmonary collateral flow (SPCF)
Systemic flow estimator (AO) – (SVC + IVC)
Pulmonary flow estimator (RPV + LPV) - (RPA + LPA)
  1. AO, aorta; IVC, inferior vena cava; LPA, left pulmonary artery; LPV, left pulmonary veins; RPA, right pulmonary artery; RPV, right pulmonary veins; SPCF, systemic-to-pulmonary collateral flow; SVC, superior vena cava.