title: Myelography and lumbar renography.
mesh_terms: D006261:Headache / Q000209:etiology; D006801:Humans; D008161:Lumbosacral Region / Q000000981:diagnostic imaging*; D009192:Myelography / Q000009:adverse effects; D010690:Phlebography; D013035:Spasm / Q000209:etiology