COMPUTED TOMOGRAPHY AND MAGNETIC RESONANCE FOR THE ADVANCED IMAGING OF THE NORMAL NASAL CAVITY AND PARANASAL SINUSES OF THE KOALA (PHASCOLARCTOS CINEREUS)

2014 ◽  
Vol 45 (4) ◽  
pp. 766-774 ◽  
Author(s):  
Marjorie Bercier ◽  
Kate Alexander ◽  
April Gorow ◽  
Geoffrey W. Pye
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Nasal Cavity ◽  
Paranasal Sinuses ◽  
Advanced Imaging ◽  
Phascolarctos Cinereus

The normal anatomy of the paranasal sinuses as demonstrated by computed tomography and magnetic resonance imaging

2021 ◽  
pp. 35-59
Author(s):  
Lalitha Shankar ◽  
Kate Evans ◽  
Thomas R. Marotta ◽  
Eugene Yu ◽  
Michael Hawke ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Paranasal Sinuses ◽  
Normal Anatomy ◽  
Resonance Imaging

scholarly journals Value of Computed Tomography for Radiation Therapy of Tumors of the Nasal Cavity and Paranasal Sinuses

1983 ◽  
Vol 22 (1) ◽  
pp. 3-7 ◽  
Author(s):  
M. Kondo ◽  
M. Horiuchi ◽  
Y. Inuyama ◽  
T. Dokiya ◽  
T. Tsutsui ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Radiation Therapy ◽  
Nasal Cavity ◽  
Paranasal Sinuses

ATYPICAL PRESENTATION OFCRYPTOCOCCUS NEOFORMANSIN A KOALA (PHASCOLARCTOS CINEREUS): A MAGNETIC RESONANCE IMAGING AND COMPUTED TOMOGRAPHY STUDY

2017 ◽  
Vol 48 (1) ◽  
pp. 250-254 ◽  
Author(s):  
Eva Martínez-Nevado ◽  
Elisa González Alonso-Alegre ◽  
M. Ángeles Jiménez Martínez ◽  
Alfonso Rodríguez-Álvaro ◽  
Elena Martínez de Merlo ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Atypical Presentation ◽  
Resonance Imaging ◽  
Phascolarctos Cinereus

scholarly journals Computed tomography of malignant tumors of the nasal cavity and paranasal sinuses

Cancer ◽  
1982 ◽  
Vol 50 (2) ◽  
pp. 226-231 ◽  
Author(s):  
Makoto Kondo ◽  
Masatoshi Horiuchi ◽  
Hayao Shiga ◽  
Yukio Inuyama ◽  
Takushi Dokiya ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Nasal Cavity ◽  
Paranasal Sinuses ◽  
Malignant Tumors

scholarly journals Three-dimensional modeling and automatic analysis of the human nasal cavity and paranasal sinuses using the computational fluid dynamics method

2020 ◽  
Author(s):  
Dmitry Tretiakow ◽  
Krzysztof Tesch ◽  
Jarosław Meyer-Szary ◽  
Karolina Markiet ◽  
Andrzej Skorek
Keyword(s):  
Fluid Dynamics ◽  
Computed Tomography ◽  
Computational Fluid Dynamics ◽  
Nasal Cavity ◽  
Paranasal Sinuses ◽  
Model Building ◽  
Cfd Simulation ◽  
Surface Model ◽  
Model Generation ◽  
Upper Airways

Abstract Purpose The goal of this study was to develop a complete workflow allowing for conducting computational fluid dynamics (CFD) simulation of airflow through the upper airways based on computed tomography (CT) and cone-beam computed tomography (CBCT) studies of individual adult patients. Methods This study is based on CT images of 16 patients. Image processing and model generation of the human nasal cavity and paranasal sinuses were performed using open-source and freeware software. 3-D Slicer was used primarily for segmentation and new surface model generation. Further processing was done using Autodesk® Meshmixer TM. The governing equations are discretized by means of the finite volume method. Subsequently, the corresponding algebraic equation systems were solved by OpenFOAM software. Results We described the protocol for the preparation of a 3-D model of the nasal cavity and paranasal sinuses and highlighted several problems that the future researcher may encounter. The CFD results were presented based on examples of 3-D models of the patient 1 (norm) and patient 2 (pathological changes). Conclusion The short training time for new user without a prior experience in image segmentation and 3-D mesh editing is an important advantage of this type of research. Both CBCT and CT are useful for model building. However, CBCT may have limitations. The Q criterion in CFD illustrates the considerable complication of the nasal flow and allows for direct evaluation and quantitative comparison of various flows and can be used for the assessment of nasal airflow.

Case report of long-term presence of foreign body in nasopharynx

2021 ◽  
Vol 19 (2) ◽  
pp. 91-96
Author(s):  
G. P. Zakharova ◽  
◽  
M. V. Komarov ◽  
A. D. Kanina ◽  
O. I. Goncharov ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Foreign Body ◽  
Nasal Cavity ◽  
Paranasal Sinuses ◽  
Epidural Abscess ◽  
Clinical Manifestations ◽  
Outpatient Setting ◽  
Saint Petersburg

Rhinolithiasis is a rare pathological phenomenon, according to statistics, the incidence of rhinolith is about 1 person per 10,000 otolaryngological outpatients. Often, rhinolith is accompanied by an asymptomatic course and often becomes an accidental finding. Lack of vigilance of the otorhinolaryngologist and neglect of the possibility of using computed tomography of the paranasal sinuses, first of all, at the first stage of the patient’s treatment in an outpatient setting, often leads to an untimely diagnosis of this disease. Meanwhile, late diagnosis of rhinolith can lead to the development of purulent processes, dystrophic and atrophic changes in the nasal mucosa, naso-oral fistulas, dacryocystitis, osteomyelitis and the formation of an epidural abscess. The article presents a case of prolonged (more than 22 years) presence of a foreign body in the nasal cavity in a 26-year-old female patient, which led to the formation of rhinolith. Despite the long-term complaints and clinical manifestations of the disease with constant visits to the otorhinolaryngologist, the patient did not undergo computed tomography of the paranasal sinuses. The prescribed instrumental examinations (CT scan of the paranasal sinuses and endovideoscopy of the nasal cavity) at the Saint Petersburg Research Institute of Ear, Throat, Nose and Speech allowed us to diagnose rhinolitis of the nasal cavity and successfully carry out surgical treatment.

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