Fig. 3.
Axial (a) and sagittal contrast medium enhanced CT (d) of choroidal melanoma with respective radiation isodoses with indistinct tumor margin delineation due to image modality. T2-weighted axial MRI (b), T2-weighted sagittal MRI (e), as well as contrast medium enhanced T1-weighted axial T1 (c) and sagittal (f) MRI with radiation isodoses of patient treated with CyberKnife for choroidal melanoma. The tumor margin can be recognized superiorly and distinction between tumor and subretinal fluids is possible.