Gas myelography.
D002574:Cervical Vertebrae; D006801:Humans; D009192:Myelography; D013118:Spinal Cord Diseases / Q000000981:diagnostic imaging; D013120:Spinal Cord Neoplasms / Q000000981:diagnostic imaging; D016135:Spinal Dysraphism / Q000000981:diagnostic imaging; D013128:Spinal Osteophytosis / Q000000981:diagnostic imaging; D013595:Syringomyelia / Q000000981:diagnostic imaging; D013679:Technology, Radiologic; D014056:Tomography, X-Ray