The Imaging Spectrum of Device-Related Thrombus After Percutaneous Left Atrial Appendage Occlusion

Figure 1. Detection of Small, Laminated Device-Related Thrombus on Cardiac Computed Tomography and Transesophageal Echocardiography (A to F) See the text (Case 1) for a discussion of this figure. DRT = device-related thrombus; HAT = hypoattenuated thickening; LA = left atrium; LAAO = left atrial appendage occlusion.

Figure 2. Appearance of New HAT on Concurrent Cardiac Computed Tomography and Transesophageal Echocardiography to Assess DRT Resolution (A to F) See the text (Case 1) for a discussion of this figure, which is a continuation of Figure 1. LV = left ventricle; MV = mitral valve; LUPV = left upper pulmonary vein; other abbreviations as in Figure 1.

Figure 3. Imaging at 6-Month Follow-Up (A to D) See the text (Case 1) for a discussion of this figure, which is a continuation of Figures 1 and 2. MPR = multiplanar reconstruction; TEE = transesophageal echocardiography; other abbreviations as in Figures 1 and 2.

Figure 4. Appearance of Small (<3 mm), Protruding, Sessile Hypoattenuated Thickening on Transesophageal Echocardiography (A to F) See the text (Case #2) for a discussion of this figure. Abbreviations as in Figure 1.

Figure 5. Appearance of HAT in the Device Screw Hub Cove (A to H) See the text (Case 2) for a discussion of this figure. Abbreviations as in Figure 1.

Figure 6. Detection of Low-Grade Hypoattenuated Thickening on TEE (A to H) See the text (Case 3) for a discussion of this figure. 3D = 3-dimensional; other abbreviations as in Figures 1 and 3.

Figure 7. Incomplete Thrombosis of an LAAO Device on the Appendage Surface on Transesophageal Echocardiography (A to F) See the text (Case 4) for a discussion of this figure. PV = pulmonary vein; other abbreviations as in Figures 1 and 2.

Figure 8. Large, Irregular, Protruding Hypoattenuated Thickening on Computed Tomography Not Seen on Transesophageal Echocardiography (A to H) See the text (Case 5) for a discussion of this figure. Abbreviations as in Figure 1.

Figure 9. Expansive and Bulky Area of Hypoattenuated Thickening Extending from LAAO Device Along the LA Wall on Computed Tomography (A to H) See the text (Case 6) for a discussion of this figure. AO = aorta; LLPV = left lower pulmonary vein; LPA = left pulmonary artery; PA = pulmonary artery; RPA = right pulmonary artery; RUPV = right upper pulmonary vein; other abbreviations as in Figure 1.

Figure 10. Follow-Up Transesophageal Echocardiography for Assessment of Extensive DRT (A to F) See the text (Case 6) for a discussion of this figure, which is a continuation of Figure 9. Abbreviations as in Figures 1, 2, and 7.

Figure 11. Discordant Appearance of Low-Grade HAT on Computed Tomography and DRT on Transesophageal Echocardiography (A to H) See the text (Case 7) for a discussion of this figure. Abbreviations as in Figures 1, 2, and 9.