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27.01.2022 | Original Article

Fractures of the neuro-cranium: sensitivity and specificity of post-mortem computed tomography compared with autopsy

verfasst von: Mikkel Jon Henningsen, Mette Lønstrup Harving, Christina Jacobsen, Chiara Villa

Erschienen in: International Journal of Legal Medicine | Ausgabe 5/2022

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Abstract

Post–mortem computed tomography (PMCT) is a routine tool in many forensic pathology departments as it is fast and non-destructive and allows less gruesome visualization than photographs, and the images are indefinitely storable. Several studies investigated congruence between PMCT and autopsy for skull fracture but registered only the presence or absence of fracture systems. The objective of this study was to determine location-specific sensitivity and specificity of PMCT for individual fracture lines in blunt force head trauma. Accurate 3D models based on PMCT data with all fracture lines visible are important for future studies on fractures, applying finite element analysis (FEA). We retrospectively sampled adult cases from 2013 to 2019 with skull fracture mentioned in the autopsy report. PMCT was on a Siemens 64-slice scanner and autopsy according to international guidelines. The location and direction of all fracture lines at autopsy and at de novo interpretation of scans were registered and compared. Ninety-nine cases with 4809 individual findings were included. Age ranged from 18 to 100 years. The overall sensitivity was 0.58, and specificity was 0.91. For individual locations, sensitivity ranged from 0.24 to 0.85, and specificity ranged from 0.73 to 1.00. Intra-observer agreement was 0.74, and inter-observer agreement ranged from 0.43 to 0.58. In conclusion, PMCT is suited for detection of fracture systems, but not for detection of all individual fracture lines. Our results differed from the existing literature due to the methodological choices of registering individual fracture lines. Future studies utilising FEA must supplement PMCT with autopsy data.

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Titel: Fractures of the neuro-cranium: sensitivity and specificity of post-mortem computed tomography compared with autopsy
verfasst von: Mikkel Jon Henningsen
Mette Lønstrup Harving
Christina Jacobsen
Chiara Villa
Publikationsdatum: 27.01.2022
Verlag: Springer Berlin Heidelberg
Erschienen in: International Journal of Legal Medicine / Ausgabe 5/2022
Print ISSN: 0937-9827
Elektronische ISSN: 1437-1596
DOI: https://doi.org/10.1007/s00414-022-02779-0

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