Gunshot energy transfer profile in ballistic gelatine, determined with computed tomography using the total crack length method

Bolliger, Stephan A.; Thali, Michael J; Bolliger, Michael J; Kneubuehl, Beat P (2010). Gunshot energy transfer profile in ballistic gelatine, determined with computed tomography using the total crack length method. International journal of legal medicine, 124(6), pp. 613-6. Heidelberg: Springer-Verlag 10.1007/s00414-010-0503-z

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By measuring the total crack lengths (TCL) along a gunshot wound channel simulated in ordnance gelatine, one can calculate the energy transferred by a projectile to the surrounding tissue along its course. Visual quantitative TCL analysis of cut slices in ordnance gelatine blocks is unreliable due to the poor visibility of cracks and the likely introduction of secondary cracks resulting from slicing. Furthermore, gelatine TCL patterns are difficult to preserve because of the deterioration of the internal structures of gelatine with age and the tendency of gelatine to decompose. By contrast, using computed tomography (CT) software for TCL analysis in gelatine, cracks on 1-cm thick slices can be easily detected, measured and preserved. In this, experiment CT TCL analyses were applied to gunshots fired into gelatine blocks by three different ammunition types (9-mm Luger full metal jacket, .44 Remington Magnum semi-jacketed hollow point and 7.62 × 51 RWS Cone-Point). The resulting TCL curves reflected the three projectiles' capacity to transfer energy to the surrounding tissue very accurately and showed clearly the typical energy transfer differences. We believe that CT is a useful tool in evaluating gunshot wound profiles using the TCL method and is indeed superior to conventional methods applying physical slicing of the gelatine.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Service Sector > Institute of Legal Medicine > Forensic Medicine
04 Faculty of Medicine > Service Sector > Institute of Legal Medicine > Forensic Imaging
04 Faculty of Medicine > Service Sector > Institute of Legal Medicine

UniBE Contributor:

Bolliger, Stephan; Thali, Michael; Bolliger, Michael and Kneubühl, Beat P.

ISSN:

0937-9827

Publisher:

Springer-Verlag

Language:

English

Submitter:

Factscience Import

Date Deposited:

04 Oct 2013 14:10

Last Modified:

26 Jun 2018 14:10

Publisher DOI:

10.1007/s00414-010-0503-z

PubMed ID:

20725735

Web of Science ID:

000282826800013

BORIS DOI:

10.7892/boris.1532

URI:

https://boris.unibe.ch/id/eprint/1532 (FactScience: 203306)

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