Characterization of Pulmonary Vein Dimensions Using High-Definition 64-Slice Computed Tomography prior to Radiofrequency Catheter Ablation for Atrial Fibrillation
Figure 4
(a–c) Identification and labelling of left atrium and pulmonary vein ostia in 2-dimensional (axial) viewing. (d) Confirmation of point of inflection between pulmonary vein and left atrial wall in curved multiplanar reconstructions. (e-f) Following clear identification of ostia, measurement of minimal and maximal ostial pulmonary vein diameter in oblique view. (g-h) Three-dimensional volume-rendered reconstruction: the previously identified ostium was used as a starting point for volume measurements along the course of the PV to the midpoint of the PV 1 cm distal of the ostium. (i) Depiction of pulmonary vein anatomy and branching pattern by using 3D volume-rendered images. (j) Tracing and labelling of left atrium for left atrium volume measurements by using 3D rendered images. LIPV, left inferior pulmonary vein; LSPV, left superior pulmonary vein; RIPV, right inferior pulmonary vein; RSPV, right superior pulmonary vein; RMPV, right middle pulmonary vein.
