label: Intraoperative magnetic resonance imaging (MRI) of brain including brain stem and skull base, without contrast material, followed by contrast material and further sequences, during open intracranial procedure, to assess for residual vascular malformation
label_lc: intraoperative magnetic resonance imaging (mri) of brain including brain stem and skull base, without contrast material, followed by contrast material and further sequences, during open intracranial procedure, to assess for residual vascular malformation