Abstract:
:Determination of electrolyte concentrations (mainly potassium) in vitreous humour has long been considered an important tool in human death investigations for the estimation of the post-mortem interval (PMI). On the basis of its well known potential in ion analysis, capillary zone electrophoresis (CZE) has recently been applied to achieve a rapid and simultaneous determination of inorganic ions in this extracellular fluid. In the present work, artificial neural networks (ANN) were applied for modelling of the relationship of multicomponent CZE analysis of K+, NH4+, Na+, and Ba2+ ions in vitreous humour with PMI. In a study based on 61 cases with different causes of death and a known PMI ranging from 3 to 144 h, the use of ANNs considering all inorganic ion data from the human vitreous humour, achieved a substantial improvement of post-mortem interval prediction. Good linear correlation was observed (r2 = 0.98) and in comparison to the traditional linear least squares (LLS) method applied only to K+ levels in the vitreous humour, the prediction of PMI with ANN was improved by a factor of 5 from approximately +/- 15 h to less than 3 h.
journal_name
Int J Legal Medjournal_title
International journal of legal medicineauthors
Bocaz-Beneventi G,Tagliaro F,Bortolotti F,Manetto G,Havel Jdoi
10.1007/s004140100239subject
Has Abstractpub_date
2002-02-01 00:00:00pages
5-11issue
1eissn
0937-9827issn
1437-1596journal_volume
116pub_type
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journal_title:International journal of legal medicine
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journal_title:International journal of legal medicine
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journal_title:International journal of legal medicine
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更新日期:1997-01-01 00:00:00
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journal_title:International journal of legal medicine
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pub_type: 杂志文章
doi:10.1007/s00414-016-1500-7
更新日期:2017-05-01 00:00:00
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journal_title:International journal of legal medicine
pub_type: 杂志文章
doi:10.1007/BF02432127
更新日期:1996-01-01 00:00:00
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pub_type: 杂志文章
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journal_title:International journal of legal medicine
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journal_title:International journal of legal medicine
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更新日期:2017-01-01 00:00:00
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