Brain, spine surgeons say yes to ultrasound.
D001927:Brain Diseases / Q000601:surgery*; D001932:Brain Neoplasms / Q000601:surgery; D006801:Humans; D007432:Intraoperative Period; D013118:Spinal Cord Diseases / Q000601:surgery*; D013238:Stereotaxic Techniques; D014463:Ultrasonography