title: Standardized way for imaging of the sagittal spinal balance.
abstract: Nowadays, conventional or digitalized teleradiography remains the most commonly used tool for the study of the sagittal balance, sometimes with secondary digitalization. The irradiation given by this technique is important and the photographic results are often poor. Some radiographic tables allow the realization of digitalized spinal radiographs by simultaneous translation of X-ray tube and receptor. EOS system is a new, very low dose system which gives good quality images, permits a simultaneous acquisition of upright frontal and sagittal views, is able to cover in the same time the spine and the lower limbs and study the axial plane on 3D envelope reconstructions. In the future, this low dose system should take a great place in the study of the pelvispinal balance. On the lateral view, several pelvic (incidence, pelvic tilt, sacral slope) and spinal (lumbar lordosis, thoracic kyphosis, Th9 sagittal offset, C7 plumb line) parameters are drawn to define the pelvispinal balance. All are interdependent. Pelvic incidence is an individual anatomic characteristic that corresponds to the "thickness" of the pelvis and governs the spinal balance. Pelvis and spine, in a harmonious whole, can be compared to an accordion, more or less compressed or stretched.
authors.affiliation: Centre d'Imagerie Léonard de Vinci, 43, rue Cortambert, 75116, Paris, France. gerard.morvan@yahoo.fr
authors.forename: Gérard
authors.initials: G
authors.lastname: Morvan
authors.forename: Philippe
authors.initials: P
authors.lastname: Mathieu
authors.forename: Valérie
authors.initials: V
authors.lastname: Vuillemin
authors.forename: Henri
authors.initials: H
authors.lastname: Guerini
authors.forename: Philippe
authors.initials: P
authors.lastname: Bossard
authors.forename: Frédéric
authors.initials: F
authors.lastname: Zeitoun
authors.forename: Marc
authors.initials: M
authors.lastname: Wybier
mesh_terms: D004307:Dose-Response Relationship, Radiation; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation / Q000379:methods / Q000592:standards; D021621:Imaging, Three-Dimensional / Q000295:instrumentation / Q000379:methods* / Q000592:standards; D010388:Pelvis / Q000000981:diagnostic imaging* / Q000502:physiology / Q000503:physiopathology; D004856:Postural Balance / Q000502:physiology*; D011859:Radiography; D013131:Spine / Q000000981:diagnostic imaging* / Q000502:physiology / Q000503:physiopathology; D019112:Teleradiology / Q000295:instrumentation / Q000379:methods* / Q000592:standards