scholarly journals Anatomical description of the skulls of peccaries (Tayassu tajacu, Linnaeus 1758) by computed tomography

2021 ◽  
Vol 73 (4) ◽  
pp. 861-867
Author(s):  
J.R. Araújo ◽  
R.P.S. Rodrigues ◽  
F.C.A. Sousa ◽  
L.S. Moura ◽  
A.B.S. Silva ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Nasal Bone ◽  
Preclinical Research ◽  
Anatomical Structures ◽  
3D Images ◽  
Reconstruction Software ◽  
Important Diagnostic Tool ◽  
Palatal Bone ◽  
Parietal Bones

ABSTRACT The aim of this study was to evaluate the anatomical structures of the skulls of peccaries to establish the basis for their clinical study and future preclinical research. Ten skulls of adult peccaries were subjected to tomographic examination. The data obtained were processed via three-dimensional image reconstruction software (3D images). The reconstructions obtained from the neurocranium of the studied specimens allowed the identification and description of the following structures: nasal bone, frontal bone, parietal bones, incisor bone, maxillary bone, zygomatic bone, temporal bone, palatal bone, occipital bone, vomer bone, pterygoid bone, sphenoid bone, paranasal sinuses and orbit. Computed tomography proved to be an important diagnostic tool in the investigation of the skull of this species, allowing the acquisition of anatomical values not yet documented for the species in the literature.

scholarly journals Computed Tomography evaluation of maxillofacial injuries

2017 ◽  
Vol 12 (4) ◽  
pp. 131-136
Author(s):  
V Natraj Prasad ◽  
Ashish Khanal
Keyword(s):  
Computed Tomography ◽  
Multidetector Computed Tomography ◽  
Three Dimensional ◽  
Nasal Bone ◽  
Imaging Features ◽  
Maxillofacial Injuries ◽  
Female Population ◽  
Complex Anatomy ◽  
Plain Films ◽  
Maxillofacial Fractures

Background & Objectives: The maxillofacial region, a complex anatomical structure, can be evaluated by conventional (plain) films, Tomography, Multidetector Computed Tomography, Three-Dimensional Computed Tomography, Orthopantomogram and Magnetic Resonance Imaging. The study was conducted with objective of describing various forms of maxillofacial injuries, imaging features of different types of maxillofacial fractures and the advantage of using Three- Dimensional Computed Tomography reconstructed image. Materials & Methods: A hospital based cross-sectional study was conducted among 50 patients during April 2014 to September 2016 using Toshiba Aquilion Prime 160 slice Multi Detector Computed Tomography scanner.Results: The maxillofacial fractures were significantly higher in male population (88%) than female population (12 %). Road traffic accidents were the most common cause of injury others being physical assault and fall from height. It was most common in 31-40 years (26%) and 21-30 (24%) years age group. Maxillary sinus was the commonest fracture (36%) followed by nasal bone and zygomatic bone (30%), mandible and orbital bones (28%). Soft tissue swelling was the commonest associated finding. Three dimensional images (3 D) compared to the axial scans missed some fractures. However, the extension of the complex fracture lines and degree of displacement were more accurately assessed. Complex fractures found were Le fort (6%) and naso-orbito-ethmoid (4%) fractures.Conclusion: The proper evaluation of complex anatomy of the facial bones requires Multidetector Computed Tomography which offers excellent spatial resolution enabling multiplanar reformations and three dimensional reconstructions for enhanced diagnostic accuracy and surgical planning.

scholarly journals Lobectomy for lung cancer with a displaced left B1 + 2 and an anomalous pulmonary vein: a case report

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Shinichi Sakamoto ◽  
Hiromitsu Takizawa ◽  
Naoya Kawakita ◽  
Akira Tangoku
Keyword(s):  
Computed Tomography ◽  
Lung Cancer ◽  
Pulmonary Vein ◽  
Three Dimensional ◽  
Lower Lobe ◽  
Rare Condition ◽  
3D Ct ◽  
Anatomical Structures ◽  
Case Presentation ◽  
Anomalous Pulmonary Vein

Abstract Background A displaced left B1 + 2 accompanied by an anomalous pulmonary vein is a rare condition involving complex structures. There is a risk of unexpected injuries to bronchi and blood vessels when patients with such anomalies undergo surgery for lung cancer. Case presentation A 59-year-old male with suspected lung cancer in the left lower lobe was scheduled to undergo surgery. Chest computed tomography revealed a displaced B1 + 2 and hyperlobulation between S1 + 2 and S3, while the interlobar fissure between S1 + 2 and S6 was completely fused. Three-dimensional computed tomography (3D-CT) revealed an anomalous V1 + 2 joining the left inferior pulmonary vein and a branch of the V1 + 2 running between S1 + 2 and S6. We performed left lower lobectomy via video-assisted thoracic surgery, while taking care with the abovementioned anatomical structures. The strategy employed in this operation was to preserve V1 + 2 and confirm the locations of B1 + 2 and B6 when dividing the fissure. Conclusion The aim of the surgical procedure performed in this case was to divide the fissure between S1 + 2 and the inferior lobe to reduce the risk of an unexpected bronchial injury. 3D-CT helps surgeons to understand the stereoscopic positional relationships among anatomical structures.

Analysis of the nasal bone and nasal pyramid by three-dimensional computed tomography

2007 ◽  
Vol 265 (4) ◽  
pp. 421-424 ◽  
Author(s):  
Seung Ho Lee ◽  
Tae Yong Yang ◽  
Gil Soo Han ◽  
Young Hyo Kim ◽  
Tae Young Jang
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Nasal Bone ◽  
Nasal Pyramid

scholarly journals Diagnostic tools in maxillofacial fractures: Is there really a need of three-dimensional computed tomography?

2016 ◽  
Vol 49 (02) ◽  
pp. 225-233 ◽  
Author(s):  
Sheerin Shah ◽  
Sanjeev K. Uppal ◽  
Rajinder K. Mittal ◽  
Ramneesh Garg ◽  
Kavita Saggar
Keyword(s):  
Computed Tomography ◽  
Clinical Examination ◽  
Computed Radiography ◽  
Three Dimensional ◽  
Nasal Bone ◽  
Conventional Radiography ◽  
Diagnostic Tools ◽  
Ct Reconstruction ◽  
Management Protocol ◽  
Maxillofacial Fractures

ABSTRACTIntroduction: Because of its functional and cosmetic importance, facial injuries, especially bony fractures are clinically very significant. Missed and maltreated fractures might result in malocclusion and disfigurement of the face, thus making accurate diagnosis of the fracture very essential. In earlier times, conventional radiography along with clinical examination played a major role in diagnosis of maxillofacial fractures. However, it was noted that the overlapping nature of bones and the inability to visualise soft tissue swelling and fracture displacement, especially in face, makes radiography less reliable and useful. Computed tomography (CT), also called as X-ray computed radiography, has helped in solving this problem. This clinical study is to compare three-dimensional (3D) CT reconstruction with conventional radiography in evaluating the maxillofacial fractures preoperatively and effecting the surgical management, accordingly. Materials and Methods: Fifty patients, with suspected maxillofacial fractures on clinical examination, were subjected to conventional radiography and CT face with 3D reconstruction. The number and site of fractures in zygoma, maxilla, mandible and nose, detected by both the methods, were enumerated and compared. The final bearing of these additional fractures, on the management protocol, was analysed. Results: CT proved superior to conventional radiography in diagnosing additional number of fractures in zygoma, maxilla, mandible (subcondylar) and nasal bone. Coronal and axial images were found to be significantly more diagnostic in fracture sites such as zygomaticomaxillary complex, orbital floor, arch, lateral maxillary wall and anterior maxillary wall. Conclusion: 3D images gave an inside out picture of the actual sites of fractures. It acted as mind’s eye for pre-operative planning and intra-operative execution of surgery. Better surgical treatment could be given to 33% of the cases because of better diagnostic ability of CT.

scholarly journals Palatal bone defect mimicking a chronic periapical lesion: a case report emphasizing the importance of the use of a three-dimensional radiographic examination

2018 ◽  
Author(s):  
Miki Hisatomi ◽  
Luciana Munhoz ◽  
Junichi Asaumi ◽  
Emiko Saito Arita
Keyword(s):  
Computed Tomography ◽  
Bone Defect ◽  
Cone Beam Computed Tomography ◽  
Three Dimensional ◽  
Cone Beam ◽  
Clinical Report ◽  
Periapical Lesion ◽  
Plain Radiographs ◽  
Palatal Bone ◽  
Periapical Radiography

Chronic periapical lesion is among the most usual bone pathology observed in human teeth, and it is often first detected by plain radiographs, such as panoramic or periapical radiography. Plain radiographs are widely used in dentistry; however, they have limitations inherent to the technique itself, such as anatomic structures overlapping and lack of information on the extension of the lesion. Therefore, three-dimensional radiographic methods, such as cone beam computed tomography are valuable to accurately assess periapical lesions. Thus, this clinical report describes a case in which the bone radiographic features led to a primary diagnosis of chronic periapical lesion in superior incisors, however, it was a defect in the palatal bone. The resulting radiolucency created by the palatal bone defect overlapped the maxillary bone, mimicking a periapical lesion. Additionally, in the same case, we demonstrate a true chronic periapical lesion in another area that presented as a subtle radiolucency in periapical radiography, however, it was larger than expected when evaluated in Cone Beam Computed Tomography.

scholarly journals Orthodontic 2D and 3D frontal sinus imaging records: an important role in human identification

2021 ◽  
Vol 10 (3) ◽  
pp. e49110313608
Author(s):  
Franciéllen de Barros ◽  
Mônica da Costa Serra ◽  
Bárbara Kuhnen ◽  
Rienne Assis Matos ◽  
Clemente Maia da Silva Fernandes
Keyword(s):  
Computed Tomography ◽  
Dimensional Analysis ◽  
Frontal Sinus ◽  
Three Dimensional ◽  
Human Identification ◽  
Forensic Sciences ◽  
Two Dimensional ◽  
3D Images ◽  
Frontal Sinuses ◽  
2D And 3D

Two-dimensional imaging records, as conventional radiographies, are part of the orthodontic clinic routine; frontal sinus images are often present in these exams. The characteristics of the frontal sinus are information of great relevance for the Forensic Sciences, as their images may be used for human identification purposes. With the advent of new three-dimensional technologies and computerized image examinations such as Computed Tomography (CT), three-dimensional analysis of the frontal sinuses has become possible. This article evaluates the possibilities of human identification using frontal sinuses 2D and 3D images and the role of orthodontists in this context. Pubmed, SciELO, LILACS and Web of Science were used as databases. As inclusion criteria, were selected texts concerning the studied issue. Although the analysis of frontal sinuses is traditionally carried out using two-dimensional images, there is a growing trend of studies employing CT scans. Cone-Beam Computed Tomography (CBCT) is an important diagnosis tool, more frequently used in orthodontics, which allows a three-dimensional approach and great precision in measurements. Together with two-dimensional analysis of frontal sinuses, 3D images are of great value for human identification. Although three-dimensional analysis is not yet a routine, its Forensic use is undoubtedly an excellent tool provided by new technologies. It is important that the orthodontist knows this possibility by properly keeping the patients’ imaging exams.

scholarly journals The Practical Role of Three Dimensional Computed Tomography in the Diagnosis of Nasal Bone Fractures

2005 ◽  
Vol 16 (1) ◽  
pp. 84-88
Author(s):  
Cheol-Young Choi ◽  
Hyuk-Jin Jang ◽  
Chong-Ae Kim ◽  
Won-Yong Lee ◽  
Won-Hung Jung
Keyword(s):  
Computed Tomography ◽  
Bone Fractures ◽  
Three Dimensional ◽  
Nasal Bone

scholarly journals Estimation of Forensic Sex Based on Three-Dimensional Reconstruction of Skull in Korean: Non-metric Study

2021 ◽  
Vol 45 (3) ◽  
pp. 79-86
Author(s):  
Yun Taek Shim ◽  
Ye Hwon Jeong ◽  
Yi-Suk Kim ◽  
Nahyun Aum ◽  
Seung Gyu Choi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Sex Determination ◽  
Three Dimensional ◽  
Estimation Method ◽  
Ct Images ◽  
Slice Thickness ◽  
Sex Estimation ◽  
3D Image ◽  
3D Images ◽  
Dimensional Reconstruction

This study performed the forensic anthropological sex estimation of Koreans in a non-metric way by reconstructing three-dimensional (3D) computed tomography (CT) images of skulls. The skull CT images used in this study were 100 (51 males, 49 females), and all CT images were taken with a slice thickness of 0.75 mm and then reconstructed into 3D images using the MIMICS 23.0 program. Using the reconstructed 3D image, measurements were repeated twice. The sex determination was male if the 4 point to 5 point was relatively more in five landmarks, and female if the points of 1 to 2 were relatively more. Results of the study show that, 88 of the 100 cases matched the actual sex. Among the 12 discrepant cases, ten cases were mismatched with the actual sex even though the estimation and repeated estimation readout of sexestimating were the same. Two cases, were “unknown,” showing different sexes in the first and repeated estimations. In conclusion, this study indicated that a forensic anthropological analysis from 3D images provided accurate point information on the landmarks of skulls, showing as high an accuracy as the sex estimation method using real bones. The ten cases of sex mismatch, except the two “Unknown” cases, are considered to be errors that did not consider differences in population groups. In further studies, further establishing a nonmetric, specifically Korean methods to increase the accuracy and reliability of sex estimation is need.

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