| Non-invasive visualisation and volume estimation of maggot masses using computed tomography scanning. | |
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MedLine Citation:
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PMID: 22297427 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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There is limited understanding of the actual temperatures that maggots experience during growth. The impact of maggot mass heating on their growth rates cannot be properly factored into maggot growth rate models, thus limiting the accuracy of forensic entomology estimates. One of the major factors contributing to mass heating is the mass size; however, measuring mass volume is problematic as masses quickly become disturbed when probing them to measure their depth and width. Furthermore, many masses are deep within the body cavity and are inaccessible. This study examined the development of a non-invasive means for measuring mass volume using computed tomography (CT) scanning. It was found that CT can be used to visualise and measure the volume of maggot masses, and a series of rules for doing so were established. The level of agreement between mass measurements made by four 'judges' using CT volumetric analysis tools produced excellent reliability (ICC > 0.95). This high level of reliability was maintained when applied to masses of different sizes in experimental cups of meat and natural masses of mixed species on human bodies. Entomological features of mortuary CT scans are now routinely reported in forensic entomology casework in Victoria, Australia, as a result of our work. |
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Authors:
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Aidan Johnson; Melanie Archer; Lyndie Leigh-Shaw; Matthew Brown; Chris O'Donnell; James Wallman |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-2 |
Journal Detail:
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Title: International journal of legal medicine Volume: - ISSN: 1437-1596 ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-2-2 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9101456 Medline TA: Int J Legal Med Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia, aidan@uow.edu.au. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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