title: Evaluation of right ventricular function in patients with tetralogy of Fallot using the myocardial performance index and isovolumic acceleration: a comparison with cardiac magnetic resonance imaging.
abstract: BACKGROUND
  Assessment of right ventricular function is a key point in the follow-up of operated patients with tetralogy of Fallot. Cardiac magnetic resonance assessment of right ventricular function is considered the gold standard. However, this technique is expensive, has limited availability, and requires significant expertise to acquire and interpret the images. Myocardial performance index and isovolumic acceleration have recently been studied for the assessment of right ventricular function and are shown to be simple yet powerful tools for assessing patients with right ventricular dysfunction of various origins.
  
  
  METHODS
  In this study, the integrity of myocardial performance index and isovolumic acceleration obtained by tissue Doppler imaging echocardiography to quantify right ventricular function was assessed in 31 patients operated for tetralogy of Fallot. Myocardial performance index and isovolumic acceleration measurements were compared with the parameters derived by cardiac magnetic resonance imaging.
  
  
  RESULTS
  In this study, a significant correlation has not been detected between cardiac magnetic resonance-originated right ventricular ejection fraction, pulmonary regurgitation fraction and myocardial performance index, isovolumic acceleration obtained by tissue Doppler imaging echocardiography from the lateral tricuspid annulus of the right ventricle.
  
  
  CONCLUSIONS
  We have concluded that when evaluated separately, myocardial performance index and isovolumic acceleration obtained from tissue Doppler imaging echocardiography can be used in the long-term follow-up of patients who have been operated for tetralogy of Fallot, but that they do not show correlation with cardiac magnetic resonance-originated right ventricle ejection fraction and pulmonary regurgitation fraction.
authors.affiliation: 1 Department of Pediatric Cardiology, Harran University Medical Faculty, Sanlıurfa, Turkey.
authors.forename: Bülent
authors.initials: B
authors.lastname: Koca
authors.affiliation: 2 Department of Pediatric Cardiology, İstanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey.
authors.forename: Funda
authors.initials: F
authors.lastname: Öztunç
authors.affiliation: 2 Department of Pediatric Cardiology, İstanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey.
authors.forename: Ayşe Güler
authors.initials: AG
authors.lastname: Eroğlu
authors.affiliation: 2 Department of Pediatric Cardiology, İstanbul University Cerrahpasa Medical Faculty, Istanbul, Turkey.
authors.forename: Selman
authors.initials: S
authors.lastname: Gökalp
authors.affiliation: 3 Department of Pediatric Radiology, İstanbul University Medical Faculty, Istanbul, Turkey.
authors.forename: Memduh
authors.initials: M
authors.lastname: Dursun
authors.affiliation: 3 Department of Pediatric Radiology, İstanbul University Medical Faculty, Istanbul, Turkey.
authors.forename: Ravza
authors.initials: R
authors.lastname: Yilmaz
mesh_terms: D000293:Adolescent; D057791:Cardiac Imaging Techniques; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006321:Heart / Q000502:physiology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D013771:Tetralogy of Fallot / Q000503:physiopathology*; D016278:Ventricular Function, Right