Fig. (6) (A) Axial cross-secitonal view of the unprocessed sample (B) Sagital cross-sectional view of unprocessed sample (C) Coronal sectional view of Cu diffused sample (D) Axial cross-secitonal view of the Cu diffused sample (E) Sagital cross-sectional view of Cu diffused sample (F) Avarage pixel values of radio opacity of Cu diffused sample (G) Pixel value of depth of penetration of leaked Cu ions.