Figure 2. Change in contrast defects (CDs) by altered oral anticoagulant therapy.
Contrast computed tomography (CT) in the prone position was performed in the early (A) and late phases (B). Both images showed CDs. We changed the oral anticoagulant from edoxaban to rivaroxaban, and three months later, subsequent CT showed the disappearance of the CD, and residual contrast was observed along the margin of the left atrial appendage under the same CT conditions (C). Arrows show CDs, and arrowheads show residual contrast.