Electron beam computed tomography for the detection of left atrial thrombi in patients with atrial fibrillation. Issue 12 (16th November 2004) - Achenbach, S; Sacher, D; Ropers, D; Pohle, K; Nixdorff, U; Hoffmann, U; Muschiol, G; Flachskampf, F A; Daniel, W G