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 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 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.

Computed Tomography Evaluation of Nasal Bone and Nasal Pyramid in the Turkish Population

2017 ◽  
Vol 28 (4) ◽  
pp. 1063-1067 ◽  
Author(s):  
Hatice Kaplanoglu ◽  
Hüseyin Coskun ◽  
Ugur Toprak
Keyword(s):  
Computed Tomography ◽  
Nasal Bone ◽  
Turkish Population ◽  
Nasal Pyramid

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 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

Computed Tomography Evaluation of Nasal Dimensions among Different Singaporean Ethnicities

2020 ◽  
Vol 36 (05) ◽  
pp. 499-504
Author(s):  
Charmain Liling Zhao ◽  
Suzanne Teo ◽  
Lisa Lim ◽  
Sandeep Uppal
Keyword(s):  
Computed Tomography ◽  
Degrees Of Freedom ◽  
Nasal Bone ◽  
Ct Images ◽  
Lateral Osteotomy ◽  
Significant Difference ◽  
Aperture Width ◽  
Nasal Pyramid ◽  
High Level ◽  
Pyriform Aperture

AbstractOsteotomies in rhinoplasty are performed to correct deformities in nasal contour. The size of osteotome used is dictated by the thickness of the bony nasal pyramid along the osteotomy route. The aim of this study is to determine whether nasal bony dimensions differ between different ethnic groups in Singapore. Randomly selected patients' computed tomography (CT) scans of the face performed between the years 2010 to 2013 in our institution (Khoo Teck Puat Hospital) were evaluated. The setting was a tertiary government hospital. CT images of 309 patients (233 Chinese [147 males, 86 females], 32 Malays [16 males, 16 females], and 44 Indians [33 males, 11 females]) were evaluated. Anthropomorphic measurements of the nasal bone along the track of the lateral, medial, and intermediate osteotomies, as well as the nasal bone length and pyriform aperture width were measured on the CT images by two independent observers. Statistical analysis was performed using Student's t-test and two-way analysis of variance (ANOVA) test. There was no significant difference between the nasal pyramid bone thickness between different ethnicities along the osteotomy tracks (p > 0.05; degrees of freedom [df] = 2). However, there was a significant difference between males and females of the same ethnicity at the low level of the lateral osteotomy (p = 0.003) and the midlevel (p = 0.002) and high-level (p = 0.004) of the intermediate osteotomy. There was a statistically significant difference in nasal pyramid length (p < 0.05, df = 2) and pyriform aperture width (p < 0.05, df = 2) among the races and between the genders (p < 0.05). The mean difference in nasal pyramid length of 2.54 mm and pyriform aperture width of 1.89 mm was particularly significant between the Chinese and the Indians. Gender and ethnic differences in nasal bony dimensions should be considered in surgical planning for rhinoplasty.

X-ray microtomography

1988 ◽  
Vol 46 ◽  
pp. 998-999
Author(s):  
H.W. Deckman ◽  
B.F. Flannery ◽  
J.H. Dunsmuir ◽  
K.D' Amico
Keyword(s):  
Computed Tomography ◽  
Internal Structure ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Tissue Structure ◽  
Individual Element ◽  
X Ray ◽  
Non Invasive ◽  
Panoramic Imaging ◽  
Three Dimensional Images

We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As conventionally practiced in medical Computed Tomography (CT), radiologists produce maps of bone and tissue structure in several planar sections that reveal features with 1mm resolution and 1% contrast. Microtomography extends the capability of CT in several ways. First, the resolution which approaches one micron, is one thousand times higher than that of the medical CT. Second, our approach acquires and analyses the data in a panoramic imaging format that directly produces three-dimensional maps in a series of contiguous stacked planes. Typical maps available today consist of three hundred planar sections each containing 512x512 pixels. Finally, and perhaps of most import scientifically, microtomography using a synchrotron X-ray source, allows us to generate maps of individual element.

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