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Int J Legal Med. 2013 May;127(3):639-52. doi: 10.1007/s00414-013-0840-9. Epub 2013 Mar 21.

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

Author information

1
University Centre of Legal Medicine, Lausanne-Geneva, University Hospital of Lausanne, Rue du Bugnon 21, 1011 Lausanne, Switzerland. christine.bruguier@chuv.ch

Abstract

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.

PMID:
23515679
DOI:
10.1007/s00414-013-0840-9
[Indexed for MEDLINE]

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