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.