CT
Thin-slice (approximately 1 mm) axial CT images filtered in bone and soft tissue algorithms with multiplanar reconstructions is an adjunctive tool for the initial evaluation of a calvarial lesion. It serves as a primary modality to identify bone erosion or bony remodeling, and generally to identify the presence of a soft tissue component, evaluate the general spatiality and extent and potential multiplicity of the lesion. Contrast-enhanced CT is not typically necessary especially given that MRI will serve to otherwise fully characterize the mass, in particular the soft tissue component. CT venography (CTV), may be helpful for presurgical planning primarily in assessing for dural venous invasion. CT may be a helpful adjunctive tool that can be used for evaluation of treatment response due to its superiority in exhibiting bony lesions and expectant healing post treatment.