CT evaluation of pulmonary venous anatomy variation in patients undergoing catheter ablation for atrial fibrillation - Thorning, C; Hamady, M; Liaw, JVP; Juli, C; Lim, PB; Dhawan, R; Peters, NS; Davies, DW; Kanagaratnam, P; O'Neill, MD; Wright, AR (CLINICAL IMAGING, 2011)