Analysis of in vivo left atrial appendage morphology in patients with atrial fibrillation: a direct comparison of transesophageal echocardiography, planar cardiac CT, and segmented three-dimensional cardiac CT

Purpose Recent development of percutaneous left atrial appendage (LAA) occlusion devices has underscored the need for an accurate understanding of LAA morphology and the interchangeability of results from differing imaging modalities. The purpose of this study is to assess LAA morphology and location in AF patients, directly comparing transesophageal echocardiography (TEE), planar cardiac computed tomography (CT), and three-dimensional segmented CT reconstructions.