Study of sexual dimorphism of Malaysian crania: an important step in identification of the skeletal remains

Ibrahim, Abdelnasser; Alias, Aliza; Nor, Faridah Mohd; Swarhib, Mohamed; Bakar, Siti Noorain Abu; Das, Srijit

doi:10.5115/acb.2017.50.2.86

Cited by 28 publications

(15 citation statements)

References 19 publications

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“…To assign the case to either male or female, the product DS was compared to the sectioning point derived by the discriminant function. A value higher than the sectioning point was deemed to be male, and a value below it was deemed to be female [25]. The average mean of perimeter of mastoid for males and females (15.17 and 12.72) was used to test the equation.…”

Section: Resultsmentioning

confidence: 99%

Osteometric Estimation of Sex From Mastoid Triangle in Malaysian Population

Ibrahim

Alias

Shafie

et al. 2018

Asian J Pharm Clin Res

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Objective: Determination of sex is one of the most important parameters for conducting biological profile of unknown skeletal remains in anatomical anthropology and forensic medicine. Mastoid bone is useful for the identification of sex, as it is the most protected bone and is resistant to damage, due to its anatomical position at the base of the skull. The aim of this study was to develop new equations for the estimation of sex from mastoid triangle in the Malaysian population.Methods: About 10 parameters were studied on 388 computed tomography scans of crania in 231 males and 157 females. The parameters comprised three sides of mastoid triangle, its perimeter and area on both sides. T-test was used to compare between the right and left sides and between males and females. Stepwise discriminant function was used to reveal the best discriminatory parameter and its classification accuracy.Results: Comparison of means by T-test revealed no difference between the right and left sides in both sexes. T-test showed a significant difference between males and females for all parameters. Perimeter of mastoid triangle was found to be the best parameter by stepwise discriminant analysis. The equation based on perimeter of mastoid triangle was developed with 84.4% classification accuracy.Conclusion: The developed equation could be used to assess sexual dimorphism of fragmented Malaysian crania with intact mastoid region. The achieved cross-validated classification was relatively high compared to that in other previous studies.

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Section: Resultsmentioning

confidence: 99%

Osteometric Estimation of Sex From Mastoid Triangle in Malaysian Population

Ibrahim

Alias

Shafie

et al. 2018

Asian J Pharm Clin Res

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“…For the sake of completeness, we compared the performance of the proposed CV methods with conventional forensic estimation method [45] as shown in Table 1. Prior to describing the forensic method, it is worth emphasizing that the objective of this paper is to demonstrate the potential of computer vision methods for sex determination from human skull.…”

Section: Comparison With Forensic Approachmentioning

confidence: 99%

“…The conventional forensic method [45] is based on traditional morphometrics, where 22 estimation parameters are measured covering anatomical locations of 87 cranial samples (45 males and 42 females). These 87 samples are drawn the same dataset we obtained from the Hospital Kuala Lumpur (HKL).…”

Section: Comparison With Forensic Approachmentioning

confidence: 99%

Computer vision methods for cranial sex estimation

Arigbabu

Liao

Abdullah

et al. 2017

IPSJ T Comput Vis Appl

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The objective of this study is to demonstrate through empirical evaluation the potential of a number of computer vision (CV) methods for sex determination from human skull. To achieve this, six local feature representations, two feature learnings, and three classification algorithms are rigorously combined and evaluated on skull regions derived from skull partitions. Furthermore, we introduce for the first time the application of multi-kernel learning (MKL) on multiple features for sex prediction from human skull. In comparison to the classical forensic methods, the results in this study are competitive, attesting to the suitability of CV methods for sex estimation. The proposed approach is fully automatic.

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“…With the increased trend of mass disaster in Malaysia such as massive flood and landslide, along with the Malaysia airline plane crash in Ukraine, it leads to demanding needs of identification of human remains based on the Malaysian population. With such limitation, there were only a few studies in Malaysia using CT scan of crania and mandible for forensic identification [19][20][21]. Besides, there is no such study using scapula for identification in Malaysia.…”

Section: Introductionmentioning

confidence: 99%

A Preliminary Study of Sexual Dimorphism of Scapula by Computed Tomography in the Malaysian Population

Omar

Ali

Shafie

et al. 2019

Asian J Pharm Clin Res

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Objective: Sex estimation is one of the crucial steps for human identification, which is evident in cases of commingled, eroded, and/or missing remains. When pelvis or skull are unavailable, scapula has been used as an alternative bone for determining sex. Besides, the scapula was shown to be population-specific in several studies. Limited dry bone collections in Malaysia have led to various recommendations of virtual anthropology studies of bone in human identification. The aims of this study were to investigate the sexual dimorphism of the scapula using three-dimensional (3D) computed tomography (CT) imaging and to generate population-specific equations for sex determination in the Malaysian population.Methods: A total of 66 CT thorax images of 33 males and 33 females were taken. Morphological breadth (MB) and morphological length (ML) on bilateral scapulae were measured on 3D CT reconstructed images. Independent t-test and discriminant function analysis (DFA) were performed for analysis.Results: Results revealed that both parameters showed sexual dimorphism of scapula but displayed no difference between the right and left scapulae. DFA showed that MB and ML had high accuracy for sex estimation. The equations were highly accurate when both parameters were used in combination, followed by MB only and ML only, in that sequence.Conclusion: In brief, scapula measurements may be useful for forensic assessment of sex in the Malaysian population.

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Study of sexual dimorphism of Malaysian crania: an important step in identification of the skeletal remains

Cited by 28 publications

References 19 publications

Osteometric Estimation of Sex From Mastoid Triangle in Malaysian Population

Osteometric Estimation of Sex From Mastoid Triangle in Malaysian Population

Computer vision methods for cranial sex estimation

A Preliminary Study of Sexual Dimorphism of Scapula by Computed Tomography in the Malaysian Population

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