Computed tomography angiography of the chest without any evidence of emboli. A follow-up computed tomography after discontinuation of novel oral anticoagulant therapy and initiation of closely monitored conventional warfarin anticoagulation (international normalized ratio 2.0–3.0). A coronal section of this study at the same level as Fig. 1 reveals vessels filled with intravenous contrast indicating patency without the presence of emboli