Investigation of opacity development in the human eye for estimation of the postmortem interval

• Autorzy: Cantürk İ. , Çelik S. , Feyzi Şahin M. , Yağmur F. , Kara S. , Karabiber F.

Identyfikatory

DOI

10.1016/j.bbe.2017.02.001

• Języki publikacji: EN

Abstrakty

EN

Estimation of the postmortem interval (PMI) has attracted the attention of many researchers. It is generally accepted as a challenging task in forensic medicine. Due to its difficulty, researchers have tried to estimate the PMI using different physical and chemical techniques. Since the PMI estimation accuracies of previous studies are not at the desired level, new methods should be developed to more accurately estimate the PMI. The development of opacity in the eye in the PMI might be an important breakthrough in this field. After death, corneal hydration occurs due to degenerated endothelial cells. The degenerated endothelial barrier of the cornea cannot prevent the flow of aqueous humor to the cornea, which results in opacity. The amount of aqueous humor in the cornea determines the level of opacity. Since the flow of aqueous humor to the cornea will continue for a while, opacity is expected to increase with the PMI. In this study, images of human eyes were investigated using computer-based image analysis. The corneal and non-corneal opacities of the recorded eye images increase during the experiment. The experimental results prove that there is a correlation between the elapsed time after death and the development of opacity in the corneal and non-corneal regions in human cases. Exponential curve fitting is employed to observe the decay of the opacity over time. A repeated ANOVA test is also used to show that the opacity development is statistically significant.

Słowa kluczowe

EN

time of death estimation; forensic medicine; postmortem interval; corneal opacity; image feature extraction

PL

szacowanie czasu śmierci; medycyna sądowa; zmętnienie rogówki; ekstrakcja cech obrazu

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2017
• Tom: Vol. 37, no. 3
• Strony: 559--565
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wykr.

Twórcy

autor

Cantürk İ.

• Yıldız Technical University, Davutpasa Campus, Faculty of Electrical & Electronics, Department of Electronics & Communications Engineering, 34220 Esenler, Istanbul, Turkey

autor

Çelik S.

• Council of Forensic Medicine, İstanbul, Turkey

autor

Feyzi Şahin M.

• Council of Forensic Medicine, İstanbul, Turkey

autor

Yağmur F.

• Faculty of Medicine, İstanbul Medeniyet University, İstanbul, Turkey

autor

Kara S.

• Institute of Biomedical Engineering, Fatih University, İstanbul, Turkey

autor

Karabiber F.

• Computer Engineering Department, Yıldız Technical University, İstanbul, Turkey

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).