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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.