The 'nutcracker' spino-laminar fracture: evaluation as a sentinel lesion of a hyperextension mechanism in cervical spine trauma.

Objective: We hypothesised that the orientation of the fracture line in the cervical vertebral arch depends on the traumatic mechanism, specifically focusing on frontal oblique spino-laminar fractures to determine if this pattern can serve as an indicator of a hyperextension mechanism of injury of the cervical spine.

Materials And Methods: We reviewed the imaging records of 114 adult patients admitted to the emergency department of the Strasbourg University Hospital for severe polytrauma between January 2016 and December 2021 and who presented with a fracture of the posterior vertebral arch of the lower cervical spine on the whole-body CT scan. A radiology resident (R1) and a musculoskeletal radiologist (R2) independently read the CT scans to determine the type of vertebral arch fracture; inter- and intra-observer agreements were calculated using Cohen's Kappa test.

Accuracy of iodine quantification in dual energy CT: A phantom study across 3 different CT systems.

Introduction: No study has rigorously compared the performances of iodine quantification on recent CT systems employing different emission-based technologies, depending on the manufacturers and models.

Methods: A specific bespoke phantom was used for this study, with 12 known concentrations of iodinated contrast agent: 0.4, 0.