Skull Sex Estimation Based on Wavelet Transform and Fourier Transform

Yang, Weichun; Zhou, Mingquan; Zhang, Pengfei; Geng, Guohua; Liu, Xiaoning; Zhang, Haibo

doi:10.1155/2020/8608209

Cited by 18 publications

(15 citation statements)

References 34 publications

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“…However, they must be often updated and validated before being applied to different populations because a miscegenated population can reach 30% similarity between bone measurements of men and women [ 46 ]. A disadvantage of morphometric methods is that the manipulation can cause secondary damage to the bone [ 47 ].…”

Section: Sex Estimationmentioning

confidence: 99%

“…In the Chinese population, the use of the superior orbital margin and the frontal bone surface in a more objective method involving wavelet transform and Fourier transform reached 90.9% and 94.4% in sex estimation for males and females [ 47 ]. Additionally, the diploe thickness, which is more pronounced in men and older individuals, can assist with sex estimation in the skulls of elderly people [ 61 ].…”

Section: Sex Estimationmentioning

confidence: 99%

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Contributions of anatomy to forensic sex estimation: focus on head and neck bones

Mello-Gentil

Souza-Mello

2021

Forensic Sciences Research

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This study sought to provide an up-to-date review of the importance of anatomy to human identification, focusing on the usefulness of anatomical knowledge about the head and neck bones and teeth to sex estimation in routine forensic anthropology methods. A detailed search of osteology applications in forensic sex estimation was conducted through the electronic databases for the 10 years prior to July 2020. Relevant articles and classic literature on the subject were gathered and are outlined in this review. Among the available literature, several metric analyses showed accuracy superior to 80% in sexual diagnosis. Angles measured from the inclination of glabellae and analysis of the external frontal bone surface through three-dimensional computer-aided design emerge as reliable cranial indexes for sex estimation. in the mandible, the condylar and coronoid height, bigonial width, and coronion-gonion distance express significant sexual dimorphism. Measurements of the canine are the best option for sex estimation using teeth, as well as the thickness of the dentine or enamel of incisors. The axis vertebra surpasses other neck bones for sex estimation due to its atypical shape and the presence of the odontoid process. Metric analyses based on anatomy can provide reliable accuracy in sexual diagnosis. Adequate training and anatomical knowledge can reduce bias and interobserver differences, and the use of three-dimensional models and computed tomography images can enhance the accuracy of these methods for sex estimation. However, every method should be validated before being applied to a different population. KEY POINTS• Anatomy-based metric analyses can provide reliable accuracy in forensic sex estimation. • Glabellae inclination, external frontal bone surface, mandible, and canine teeth measurements can reach accuracies superior to 80% in sexual diagnosis.• The use of three-dimensional models and computed tomography images can enhance accuracy in sex estimation.• every method should be validated before being applied to a different population.

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Section: Sex Estimationmentioning

confidence: 99%

Section: Sex Estimationmentioning

confidence: 99%

Contributions of anatomy to forensic sex estimation: focus on head and neck bones

Mello-Gentil

Souza-Mello

2021

Forensic Sciences Research

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“…Data acquired from medical imaging modalities have been widely used in the last years. In this regard, computed tomography (CT) scans have been used in many studies on cranial sexual dimorphism [ 7 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

“…Logistic regression analysis has also been commonly applied in sex estimation studies [ 22 , 23 , 24 , 37 , 38 ]. Currently, data mining and machine learning approaches including support vector machines [ 28 , 30 , 39 , 40 , 41 ], artificial neural networks [ 27 , 29 , 41 ], decision trees [ 42 , 43 ], and classification rule algorithms [ 43 ] are extensively applied.…”

Section: Introductionmentioning

confidence: 99%

A Geometric Morphometric Study on Sexual Dimorphism in Viscerocranium

Toneva

Nikolova

Tasheva‐Terzieva

et al. 2022

Biology

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The level of sexual dimorphism manifested by human bones is an important factor for development of effective sex estimation methods. The aim of the study was to investigate the sexual dimorphism in the size and shape of the viscerocranium using geometric morphometric techniques. It also aimed to explore the sex differences in distinct viscerocranial regions and to establish the most dimorphic region with regard to size and shape. Computed tomography images of 156 males and 184 females were used in the study. Three-dimensional coordinates of 31 landmarks were acquired. Five landmark configurations were constructed from the viscerocranium and its orbital, nasal, maxillary, and zygomatic region. Generalized Procrustes superimposition, principal component analysis, and discriminant analysis were applied to each configuration. The significance of the sex differences in size and shape was assessed and significant differences were found in all configurations. The highest accuracy was obtained from both shape and size of the whole viscerocranium. Based on size only, the highest accuracy was achieved by the nasal region. The accuracy based on shape was generally low for all configurations, but the highest result was attained by the orbital region. Hence, size is a better sex discriminator than shape.

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“…The main features of biological identity are the sex, age, height, and ethnicity of the individual (9,10). Sex estimation based on skeletal remains is based on varying degrees of sexual dimorphism in the bones of the human skeleton (9).…”

Section: Introductionmentioning

confidence: 99%

Estimation of sex from computed tomography images of skull measurements in an adult Turkish population

Meral¹,

Meydan

Toklu

et al. 2021

Acta Radiol

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Background Nowadays, data on the anthropometric measurements of populations is needed in many areas, especially forensic and legal. Using various methods, researchers obtain various data such as race, sex, and age, and thus provide identification of the material used. Morphological or metric methods are often used for identification. Purpose To evaluate the usefulness of the results of skull measurements using computed tomography (CT) to determine sex in a Turkish population. Material and Methods We analyzed 300 male and 300 female CT images of Turkish individuals with an age range of 21–50 years. Maximum cranial length, maximum cranial breadth, bimastoid diameter, bizygomatic diameter, and bigonial breadth were measured by CT tomography. All data were subjected to discriminant function analyses for estimating sex. Intra-observer and inter-observer variances of the measurements were examined using intraclass correlation coefficient analysis. Results Discriminant function analysis indicated that there was a significant difference between male and female with 88% accuracy. Discriminant function for estimation of sex was obtained with satisfactory accuracy rates for the parameters used. Conclusion This study confirms that skull measurements show sexual dimorphism in the Turkish population, and also suggests that it may be useful to use CT to assess skull anthropometric measurements.

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Skull Sex Estimation Based on Wavelet Transform and Fourier Transform

Cited by 18 publications

References 34 publications

Contributions of anatomy to forensic sex estimation: focus on head and neck bones

Contributions of anatomy to forensic sex estimation: focus on head and neck bones

A Geometric Morphometric Study on Sexual Dimorphism in Viscerocranium

Estimation of sex from computed tomography images of skull measurements in an adult Turkish population

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