title: Precise alignment of x-ray beams for stereotactic surgery.
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging*; D014695:Cerebral Ventriculography; D006801:Humans; D007427:Intracranial Pressure; D008722:Methods; D013238:Stereotaxic Techniques; D013679:Technology, Radiologic / Q000295:instrumentation*; D013788:Thalamus / Q000601:surgery*