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.