title: A digital videofluoroscopic technique for spine kinematics.
abstract: The kinematic behaviour of the vertebral segments under the influence of spinal injury and other mechanical problems is difficult to quantify in patients. This paper describes the use of a calibration model and human subjects to investigate the accuracy of a method for determining lumbar intervertebral rotations using images digitized from an image intensifier. The main influences were found to be observer error in marking co-ordinates, scaling of the image presented by the computer's monitor, distortion caused by out-of-plane images and loss of image quality as a result of scattered radiation from the soft tissues. The technique may be valuable in the light of its efficiency and low X-ray exposure to patients.
authors.affiliation: Anglo-European College of Chiropractic, Dorset, UK.
authors.forename: A
authors.initials: A
authors.lastname: Breen
authors.forename: R
authors.initials: R
authors.lastname: Allen
authors.forename: A
authors.initials: A
authors.lastname: Morris
mesh_terms: D001696:Biomechanical Phenomena; D002138:Calibration; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging*; D005471:Fluoroscopy / Q000295:instrumentation*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D008953:Models, Anatomic; D009068:Movement; D012016:Reference Values; D012399:Rotation; D014743:Videotape Recording