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Multi-phase postmortem CT angiography: recognizing technique-related artefacts and pitfalls

Bruguier, C. ; Mosimann, P. ; Vaucher, P. ; Uské, A. ; Doenz, F. ; Jackowski, C. ; Mangin, P. ; Grabherr, S.

In: International Journal of Legal Medicine, 2013, vol. 127, no. 3, p. 639-652

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    Titre
    • Multi-phase postmortem CT angiography: recognizing technique-related artefacts and pitfalls
    Auteur
    • Bruguier, C.. University Centre of Legal Medicine, Lausanne-Geneva, University Hospital of Lausanne, Rue du Bugnon 21, 1011, Lausanne, Switzerland
    • Mosimann, P.. Department of Diagnostic and Interventional Radiology, University Hospital of Lausanne, Rue du Bugnon 46, 1011, Lausanne, Switzerland
    • Vaucher, P.. University Centre of Legal Medicine, Lausanne-Geneva, University of Geneva, Rue Michel-Servet 1, 1211, Geneva 4, Switzerland
    • Uské, A.. Department of Diagnostic and Interventional Radiology, University Hospital of Lausanne, Rue du Bugnon 46, 1011, Lausanne, Switzerland
    • Doenz, F.. Department of Diagnostic and Interventional Radiology, University Hospital of Lausanne, Rue du Bugnon 46, 1011, Lausanne, Switzerland
    • Jackowski, C.. Center for Forensic Imaging, Institute of Forensic Medicine, University of Bern, Buehlstr. 20, 3012, Bern, Switzerland
    • Mangin, P.. University Centre of Legal Medicine, Lausanne-Geneva, University Hospital of Lausanne, Rue du Bugnon 21, 1011, Lausanne, Switzerland
    • Grabherr, S.. University Centre of Legal Medicine, Lausanne-Geneva, University Hospital of Lausanne, Rue du Bugnon 21, 1011, Lausanne, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • International Journal of Legal Medicine, 2013, vol. 127, no. 3, p. 639-652. Springer-Verlag
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:319106
    Summary
    Background and purpose: Multi-phase postmortem CT angiography (MPMCTA) is increasingly being recognized as a valuable adjunct medicolegal tool to explore the vascular system. Adequate interpretation, however, requires knowledge about the most common technique-related artefacts. The purpose of this study was to identify and index the possible artefacts related to MPMCTA. Material and methods: An experienced radiologist blinded to all clinical and forensic data retrospectively reviewed 49 MPMCTAs. Each angiographic phase, i.e. arterial, venous and dynamic, was analysed separately to identify phase-specific artefacts based on location and aspect. Results: Incomplete contrast filling of the cerebral venous system was the most commonly encountered artefact, followed by contrast agent layering in the lumen of the thoracic aorta. Enhancement or so-called oedematization of the digestive system mucosa was also frequently observed. Conclusion: All MPMCTA artefacts observed and described here are reproducible and easily identifiable. Knowledge about these artefacts is important to avoid misinterpreting them as pathological findings