Fig. 3
From: Deep learning-based metal artifact reduction in CT for total knee arthroplasty
Axial noncontrast CT images of the left knee joint in a 66-year-old woman who underwent total knee arthroplasty. Images were reconstructed using (a) Non-MAR and (b) O-MAR protocols and are shown in the bone window setting (window width = 2000 HU, window level = 500 HU). In the O-MAR image, an abnormally high-attenuated lesion is newly visible adjacent to the lateral femoral condyle, which is not observed in the Non-MAR image. This lesion resembles bone cement and demonstrates a characteristic pseudocement appearance (arrow).
