Comparison of regurgitation and variation of in-plane flow speed in branch pulmonary arteries after repair of tetralogy of Fallot : A phase-contrast MR imaging study.
Lin Y, Huang Y, Wu M, Niu S, Ko C, Tsai S
Kaohsiung Veterans General Hospital, National Taiwan University
Pulmonary regurgitation has been regarded as an important feature for long-term clinical outcome after repair of Tetralogy of Fallot. The interest of applying phase-contrast cine magnetic resonance (PCMR) as an accurate method for evaluating flow velocity, volume and pattern has also been increasing. In this study, our preliminary result demonstrated the regurgitant fraction is a useful hemodynamic indicator in branch pulmonary arteries after repair of Tetralogy of Fallot, while coefficient of variation of in-plane velocity may reflect the severity of turbulent flow which deserves further investigation for its clinical implication.