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

作者：Bruguier C^*; Mosimann P J; Vaucher P; Uske A; Doenz F; Jackowski C; Mangin P; Grabherr S

来源：International Journal of Legal Medicine, 2013, 127(3): 639-652.

DOI：10.1007/s00414-013-0840-9

• Postmortem CT
• Postmortem angiography
• Artefacts
• Forensic radiology
• Minimally invasive autopsy

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. %26lt;br%26gt;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. %26lt;br%26gt;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. %26lt;br%26gt;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.

• 出版日期2013-5