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
Ajouter à la liste personnelle- 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