title: Introduction.
authors.forename: Walter S
authors.initials: WS
authors.lastname: Bartynski
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D010146:Pain / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000517:prevention & control*; D015641:Radiography, Interventional / Q000379:methods*; D013122:Spinal Diseases / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery*; D025321:Surgery, Computer-Assisted / Q000379:methods*