scholarly journals A PRELIMINARY STUDY OF SEXUAL DIMORPHISM OF SCAPULA BY COMPUTED TOMOGRAPHY IN THE MALAYSIAN POPULATION

2019 ◽  
Vol 12 (1) ◽  
pp. 391 ◽  
Author(s):  
Normaliza Omar ◽  
Siti Hanum Mohd Ali ◽  
Mohamed Swarhib Shafie ◽  
Nik Azuan Nik Ismail ◽  
Helmi Hadi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Sexual Dimorphism ◽  
Function Analysis ◽  
Three Dimensional ◽  
Human Identification ◽  
Forensic Assessment ◽  
Sex Estimation ◽  
Malaysian Population ◽  
The Right ◽  
Dry Bone

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.

scholarly journals A PRELIMINARY STUDY OF SEXUAL DIMORPHISM OF SCAPULA BY COMPUTED TOMOGRAPHY IN THE MALAYSIAN POPULATION

2019 ◽  
Vol 12 (1) ◽  
pp. 391
Author(s):  
Normaliza Omar ◽  
Siti Hanum Mohd Ali ◽  
Mohamed Swarhib Shafie ◽  
Nik Azuan Nik Ismail ◽  
Helmi Hadi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Sexual Dimorphism ◽  
Function Analysis ◽  
Three Dimensional ◽  
Human Identification ◽  
Forensic Assessment ◽  
Sex Estimation ◽  
Malaysian Population ◽  
The Right ◽  
Dry Bone

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.

scholarly journals Sex estimation using subpubic angle from reconstructed three-dimensional computed tomography pelvic model in a contemporary Malaysian population

2020 ◽  
Vol 53 (1) ◽  
pp. 27
Author(s):  
Siti Hanum Mohd Ali ◽  
Normaliza Omar ◽  
Mohamed Swarhib Shafie ◽  
Nik Azuan Nik Ismail ◽  
Helmi Hadi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Sex Estimation ◽  
Malaysian Population

scholarly journals Sex determination by osteometric assessment of the mastoid process using Cone Beam Computed Tomography

2020 ◽  
Vol 24 (1) ◽  
Author(s):  
Fatemeh Salemi ◽  
Maryam Farhadian ◽  
Abbas Shokri ◽  
Yaser Safi ◽  
Shahin Rahimpanah
Keyword(s):  
Computed Tomography ◽  
Sex Determination ◽  
Cone Beam Computed Tomography ◽  
Function Analysis ◽  
Three Dimensional ◽  
Good Method ◽  
Cone Beam ◽  
Mastoid Process ◽  
Discriminant Model ◽  
The Right

Objective: Sex determination is one of the most important parameters to identify in forensic science. Because the mastoid process is the most resistant to damage due to its position in the skull base, it can be used for sex determination. The purpose of this study was to measure the dimensions and convexity and internal angles of the mastoid process to present a model of sex determination in Iranian population. Material and methods: This study was performed on three-dimensional images of 190 Cone Beam Computed Tomography (CBCT) of 105 women and 85 men. On each CBCT the distance between the porion and the mastoid (PM), mastoid length (ML), the distance between the mastoidale and the mastoid incision (M-I), the mastoid height (MH), the mastoid width (MW), intermastoidale distance (IMD) the lateral surfaces of the left and right mastoids (IMLSD) and the Mastoid medial convergence angle (MMCA) was measured on both the right and the left. The data were analyzed by descriptive statistics, t-test, and discriminant function analysis. Results: Significant differences were found for all variables except MMCA and MF in both sex. All measured variables except MW were greater for men than women. The discriminant model achieved a total accuracy of 93.7%. Among the measured factors IMD and IMSLD had the most influence on sex determination. Conclusion: Measuring the dimensions of the mastoid process is a very good method for sex determination with high accuracy of 90%. KEYWORDS Discriminant model; Cone beam computed tomography (CBCT); Sex determination; Mastoid process.

scholarly journals Cone-beam computed tomography analysis on root and canal morphology of mandibular first permanent molar among multiracial population in East Coast Malaysian population

2018 ◽  
Vol 12 (03) ◽  
pp. 410-416 ◽  
Author(s):  
Prunella Ubung Deng ◽  
Mohamad Syahrizal Halim ◽  
Sam'an Malik Masudi ◽  
Saaid Al-Shehadat ◽  
Basaruddin Ahmad
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
East Coast ◽  
Cone Beam ◽  
Root Canals ◽  
Single Root ◽  
Malaysian Population ◽  
Permanent Molar ◽  
Permanent Molars ◽  
The Right

ABSTRACT Objective: The aim of this study is to investigate the variations in the number of root and canal in the mandibular first permanent molars (MFPMs) teeth in East Coast Malaysian population using cone-beam computed tomography (CBCT). Materials and Methods: CBCT images which show MFPMs recorded in HUSM Dental Clinic between January 2015 and June 2016 was obtained and analyzed for their number of roots and canals. A total of 208 CBCT images of MFPMs were collected; 118 patients had unilateral molars and 90 patients had bilateral molars. The following observations were made: (1) root number; (2) number of canals per root; and (3) comparisons of number of roots and canals according to gender, ethnicity, and position. Results: The majority of cases of bilateral MFPM had the same number of roots (95.6%, 95% confidence interval [CI]: 89.01%, 98.78%) on both the right and left side and only 4 cases (4.4%, 95% CI: 1.22%, 10.99%) had 3 roots on the right and 2 roots on the left sides. The majority of cases had the same number of canals on both sides (66.7%, 95% CI: 55.95, 76.26%) and 33.3% (95% CI: 23.74%, 44.05%) with unequal number of canals. The occurrence of the number of canals was not independent of the sides of the arch (P < 0.001) and there was statistically significantly greater proportion of cases who had greater number of canals on the right side than the left (P = 0.03). The prevalence of right single-rooted MFPM was very small at 0.3% (n = 1) in a Malay male (95% CI: 0.00, 1.83) and the most prevalent was two roots first molar (88.4%). The number of roots was not associated with sex or ethnic group (P > 0.05). The MFPM with a single root was found to have only one mesial canal. For two rooted MFPM, the most prevalent occurrence was two canals at the mesial and one canal at the distal roots (59%); followed by single canals in each mesial and distal (21%) and double canals per root (18%). Three roots MFPM have either single or double canals in the mesial root and double canals in the distal root. Conclusions: The majority of population in the East Coast region of Malaysia has two roots and three root canals in their MFPMs. There was no difference in the number of roots between gender and ethnic and canals between ethnic.

scholarly journals Application of 3D Computed Tomography Reconstruction Images to Assess the Thickness and Dimensions of the Posterior Palatal Seal Area

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Soeun Lim ◽  
Seoung-Jin Hong ◽  
Joo-Young Ohe ◽  
Janghyun Paek
Keyword(s):  
Computed Tomography ◽  
3D Model ◽  
Three Dimensional ◽  
Ct Images ◽  
Anterior Border ◽  
Lateral Direction ◽  
Mean Dimension ◽  
The Mean ◽  
The Right ◽  
Palatal Mucosa

Few studies have been reported on the scientific measurements of the thickness and dimensions of the posterior palatal seal (PPS) area. The purpose of this study is to measure and analyze the thickness of palatal mucosa by using a three-dimensional (3D) model reconstructed with computed tomography (CT) images and to present objective values by identifying the PPS area. The CT images were reconstructed as a 3D model by separating the maxillary palate mucosa and teeth. Each reconstructed model was analyzed and the thickness was measured at 93 crossing points of each divided plane. The dimension of the PPS area was measured and the right and left dimensions of the PPS area were compared. The thickness of the palatal mucosa was thicker toward the posterior area. The thickness increased in the lateral direction and decreased again. In the PPS area, the mean dimension between the rearmost of anterior border and the most posterior line was 2.19 mm and the mean dimension between the forefront of anterior border and the most posterior line was 5.19 mm in the right side and 5.16 mm in the left side. The mean dimension from the center of the palate to the right most forward point was 6.85 mm, and the left was 7.36 mm. The new measurement method of palatal mucosal thickness is noninvasive, accurate, and easy to store and study, so it can be used effectively in planning and manufacturing the maxillary complete denture in the digital workflows.

scholarly journals Variability of the level of portal vein formation registered by computed tomography

2021 ◽  
Vol 6 (1) ◽  
pp. 4-8
Author(s):  
Aleksandr V. Kolsanov ◽  
Maksim N. Myakotnykh ◽  
Anatolii V. Tolstov ◽  
Aleksei A. Mironov
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Three Dimensional ◽  
Spinal Column ◽  
Lumbar Vertebra ◽  
Thoracic Vertebra ◽  
Vein Formation ◽  
Dimensional Models ◽  
Three Dimensional Models ◽  
The Right

Objectives to study the variability of the level of portal vein formation in relation to the spinal column according to computed tomography data. Material and methods. The study evaluated the results of 100 multispiral (multislice) computed tomography (MSCT) scans of the abdominal organs done in the period of 2018-2019 and collected in the archive of the Clinics of the Samara State Medical University. For mathematical modeling and the creation of three-dimensional models of the vascular bed, we used the plug-ins in the software "Luch" and "Avtoplan" that made it possible to obtain the three-dimensional models based on MSCT data. The level of portal vein formation relative to the spinal column was studied. Results. The level of portal portal vein formation relative to the spinal column varied from the lower edge of the twelfth thoracic vertebra (ThXII) to the upper edge of the second lumbar vertebra (LII). Most often, the portal vein was formed at the level of the middle of the first thoracic vertebra body (LI). This level of portal vein formation was detected in 23% of cases. In 64% of cases, the portal vein was formed at the level of the right edge of the vertebra.

scholarly journals VATS right upper posterior segmentectomy with anomalous bronchiand pulmonary vessels: a case report and literature review

2020 ◽  
Author(s):  
Jianbin Zhang ◽  
Yilv Zhu ◽  
Hongwei Li ◽  
Caihua Yu ◽  
Weiwei Min
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Rare Case ◽  
Anatomic Variation ◽  
Three Dimensional ◽  
Posterior Segment ◽  
Detailed Model ◽  
Case Presentation ◽  
Pulmonary Vessels ◽  
The Right

Abstract BackgroundAnatomic variation may increase the difficulty and risk for anatomic segmentectomy. The preoperative three-dimensional computed tomography bronchography and angiography(3D-CTBA) can provide a detailed model of the segmental structure, and contribute to precise and safe segmentectomy.Case presentationWe report a case with anomalous bronchi and pulmonary vessels in the right upper posterior segment (RS2), under the guidance of 3D-CTBA, anatomic RS2segmentoctomywas performed accurately and safely, the postoperative condition was uneventful.ConclusionsThis rare case highlights the importance of 3D-CTBA to guild accurate segmentectomy with anatomic variation.

scholarly journals VATS right posterior segmentectomy with anomalous bronchi and pulmonary vessels: a case report and literature review

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Jianbin Zhang ◽  
Yilv Zhu ◽  
Hongwei Li ◽  
Caihua Yu ◽  
Weiwei Min
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Rare Case ◽  
Anatomic Variation ◽  
Three Dimensional ◽  
Posterior Segment ◽  
Detailed Model ◽  
Case Presentation ◽  
Pulmonary Vessels ◽  
The Right

Abstract Background Anatomic variation may increase the difficulty and risk of anatomic segmentectomy. The preoperative three-dimensional computed tomography bronchography and angiography (3D-CTBA) can provide a detailed model of the segmental structure, and contribute to precise and safe segmentectomy. Case presentation This is a case of anomalous bronchi and pulmonary vessels in the right upper posterior segment (RS2). Under the guidance of 3D-CTBA, anatomic RS2 segmentectomy was performed accurately and safely. The postoperative condition was uneventful. Conclusions This rare case highlights the importance of 3D-CTBA to guild accurate segmentectomy with anatomic variation.

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