title: Myelography in the lumbar disk syndrome.
abstract: For myelography to convey the maximum information regarding theca size and relationships, and to avoid flow artifacts and other false positives, the theca must be filled to the L1-L2 level and X-rays taken with the patient upright thus ensuring a static column of dye.
mesh_terms: D006801:Humans; D007403:Intervertebral Disc / Q000000981:diagnostic imaging*; D007405:Intervertebral Disc Displacement / Q000000981:diagnostic imaging*; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D011859:Radiography