Figure 20b. Complication of scleral buckling with hydrogel. (a) Axial T2-weighted MR image shows a markedly expanded buckle element, which is hyperintense with a low-signal-intensity rim (arrow). (b) Axial contrast-enhanced T1-weighted MR image shows that the buckle element is expanded and has rim enhancement (arrow). (Reprinted, with permission, from reference 10.)