title: Assessment of left atrial shape and volume in structural remodeling secondary to atrial fibrillation.
abstract: OBJECTIVE
  Assessment of volume in relation with left atrial (LA) shape alteration before and after PV isolation.
  
  
  METHODS
  We compared trapezoidal modification of LA using echocardiography with the ellipsoid formula (EEL: ) and CT, with both ellipsoid (CTEL: ) and truncated cone formulas (CTTR: ), in 40 patients, before and +/-3 months after AF ablation.
  
  
  RESULTS
  A trapezoidal shape was present in 76.3% of patients. The different volume measurements were statistically correlated (r = 0.603-0.837, p < 0.001) irrespective of the formula used. After reverse remodeling, with 77.5% of patients in stable sinus rhythm, correlation coefficient for volume remained significant (p < 0.001).
  
  
  CONCLUSIONS
  In AF, dilation of the LA is associated with a geometrical trapezoidal change in many cases. The CT truncated cone formula applies best for precise evaluation of trapezoidal shape alteration in dilated AF atria. There is a good correlation between CTTR: and echocardiography which remains a valuable estimation for volume calculation in clinical practice.
authors.affiliation: Cliniques Universitaires UCL de Mont-Godinne, Avenue Dr. Therasse, 1-5530, Yvoir, Belgium.
authors.forename: Mariana
authors.initials: M
authors.lastname: Floria
authors.forename: Dominique
authors.initials: D
authors.lastname: Blommaert
authors.forename: Marc
authors.initials: M
authors.lastname: Lacrosse
authors.forename: Valentin
authors.initials: V
authors.lastname: Ambarus
authors.forename: Fabien
authors.initials: F
authors.lastname: Dormal
authors.forename: Lara
authors.initials: L
authors.lastname: Dabiri Abkenari
authors.forename: Jacques
authors.initials: J
authors.lastname: Jamart
authors.forename: Ciprian
authors.initials: C
authors.lastname: Rezus
authors.forename: Dragos
authors.initials: D
authors.lastname: Cozma
authors.forename: Luc
authors.initials: L
authors.lastname: De Roy
mesh_terms: D001281:Atrial Fibrillation / Q000000981:diagnostic imaging* / Q000601:surgery*; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006325:Heart Atria / Q000000981:diagnostic imaging* / Q000601:surgery*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D008875:Middle Aged