dc.contributor.advisor |
Taylor, M |
en |
dc.contributor.advisor |
Kieser, J |
en |
dc.contributor.author |
Foote, Nardia |
en |
dc.date.accessioned |
2012-02-28T01:53:40Z |
en |
dc.date.issued |
2012 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/12193 |
en |
dc.description |
Full text is available to authenticated members of The University of Auckland only. |
en |
dc.description.abstract |
Backspatter is the term given to any biological material that is expelled from a gunshot entry wound. The high evidential value of backspatter material comes from the fact that it travels back against the line of fire. This means that biological material may land on the shooter, on or inside the firearm, or on objects in the vicinity of the shooting incident. Three mechanisms have been proposed to be involved in the production of backspatter. Firstly, the formation of a subcutaneous gas pocket, secondly, tail splashing and thirdly the collapse of the temporary cavity. To date, supporting evidence has only been reported for the occurrence of the subcutaneous gas pocket and tail splashing. The collapse of the temporary cavity has only hypothetically been linked to the production of backspatter. This thesis was initiated to investigate the role of the temporary cavity and determine if it is a realistic mechanism in the production of backspatter in cranial gunshot wounds. Currently no realistic anatomical model head exists in order to study backspatter. Therefore, an anatomical human head backspatter model was designed and constructed to assist in this investigation. This model was based on a human adult female head and was designed and constructed using the current best practice simulant materials. The model incorporated brain, cerebrospinal fluid, bone, skin, tissue and blood. High-speed photography was used to film each shot and enabled a detailed examination of the temporary cavity and backspatter to be carried out. The synthetic human adult female model head was refined and retested and has made progress toward the development of a backspatter model which responds realistically to projectile impact. Analysis of the high-speed videos showed evidence of backspatter as a result of the collapse of the temporary cavity in both the anatomical and simple box models. It was concluded that the collapse of the temporary cavity is a realistic mechanism for the production of backspatter in cranial gunshot wounds. |
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dc.publisher |
ResearchSpace@Auckland |
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dc.relation.ispartof |
Masters Thesis - University of Auckland |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
en |
dc.rights |
Restricted Item. Available to authenticated members of The University of Auckland. |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.title |
The Role of the Temporary Cavity in Cranial Backspatter |
en |
dc.type |
Thesis |
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thesis.degree.grantor |
The University of Auckland |
en |
thesis.degree.level |
Masters |
en |
dc.rights.holder |
Copyright: The author |
en |
pubs.elements-id |
305873 |
en |
pubs.record-created-at-source-date |
2012-02-28 |
en |
dc.identifier.wikidata |
Q112889677 |
|