Feasibility of Investigating the Mechanisms of Aortic Trauma Using High-Speed Cineradiography. A Pilot Study.

摘要

A pilot study was performed to evaluate use of the HSRI high-speed cineradiographic system for study of aortic trauma mechanisms. The thoraxes of anesthetized New Zealand white rabbits were impacted by a dropped accelerometer-instrumented, 1.5kg mass from a height of 2.44meters. Velocity and force data were obtained from the instrumented impacting mass. High-speed cineradiographs at approximately 1000frames per second showed thoracic skeletal deformation and heart,diaphragm,and liver displacements. No radiopaque contrast medium was used in this preliminary investigation. Post-impact autopsy revealed rib fracture,localized hemorrhaging,and aortic transection. On the basis of film obtained,this method has potential for the study of internal organ injury mechanisms.