scholarly journals Diagnostic value of magnetic resonance imaging and computed tomography for oral masses in dogs

2004 ◽  
Vol 75 (4) ◽  
Author(s):  
U.C.M. Kafka ◽  
A. Carstens ◽  
G. Steenkamp ◽  
H. Symington
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Bone Erosion ◽  
Diagnostic Value ◽  
Accurate Information ◽  
Gingival Hyperplasia ◽  
Resonance Imaging ◽  
Additional Information ◽  
Adjacent Structures

The purpose of this study was to determine the diagnostic value of magnetic resonance imaging (MRI) and computed tomography (CT) in oral masses of dogs. Nineteen dogs underwent clinical, MR and CT examinations. Eleven malignant and ten non-malignant masses were evaluated. Osteosarcoma was the most commonly found malignant oral mass and gingival hyperplasia was the most commonly found benign mass. The results showed that MRI provided more accurate information regarding the size of the masses and invasion of adjacent structures although MRI and CT show similar accuracy in assessment of bone invasion. Calcification and cortical bone erosion was better seen on CT images. Whereas contrast-MRI provided useful additional information, contrast-CT had no added benefit. In general, oral masses located in the caudal mandible, oropharynx and maxilla are better evaluated using MRI, once the histological type has been verified.

Diagnostic value of computed tomography, magnetic resonance imaging, and scintigraphy in diagnosing actinomycosis of the mandible

2016 ◽  
Vol 33 (3) ◽  
pp. 241-245 ◽  
Author(s):  
Yoshihiko Sasaki ◽  
Junya Ono ◽  
Tohru Akashiba ◽  
Masutaka Mizutani ◽  
Yasuo Okada ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Diagnostic Value ◽  
Resonance Imaging

scholarly journals Imaging of larynx: Diagnostic value of computed tomography and magnetic resonance imaging

2009 ◽  
Vol 56 (3) ◽  
pp. 39-44
Author(s):  
R.M. Maksimovic ◽  
B.A. Banko ◽  
J.P. Milovanovic
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Regional Lymph Node ◽  
Diagnostic Value ◽  
Resonance Imaging ◽  
Precise Diagnosis ◽  
Node Metastases ◽  
Magnetic Resonance Imaging Mri

Computed tomography (CT) and magnetic resonance imaging (MRI) are enabling more precise diagnosis and treatment planning in patients with diseases of the larynx. The aim of this article is to describe the role of these methods in assessment of the laringeal diseases and key local anatomic characteristics important for spread of the disease. CT and MRI have a valuable contribution to the staging of the tumors due to the possibility to show the relationship to the ventricular complex, involvement of the subumucosal spaces, defining craniocaudal and anterposterior extension, laringeal cartilage invasion, as well as regional lymph node metastases.

scholarly journals Diagnostic value of magnetic resonance imaging in the analysis of ameloblastoma: report of two cases

2019 ◽  
Vol 22 (3) ◽  
pp. 425-431
Author(s):  
Neiandro Santos Galvão ◽  
Antonione Santos Bezerra Pinto ◽  
Alan Leandro Carvalho Farias ◽  
André Luiz Ferreira Costa ◽  
Sérgio Lúcio Pereira de Castro Lopes ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Differential Diagnosis ◽  
Magnetic Resonance ◽  
Signal Intensity ◽  
Diagnostic Value ◽  
Resonance Imaging ◽  
Intermediate Signal Intensity ◽  
Additional Information ◽  
Imaging Characteristics ◽  
Magnetic Resonance Imaging Mri

Ameloblastoma is an odontogenic tumor that shares clinical and imaging characteristics with other lesions of the jaws, such as odontogenic keratocyst, which makes the diagnosis difficult. However, in addition to radiographic and tomographic examinations, Magnetic Resonance Imaging (MRI) has been increasingly used, contributing with relevant additional information about the differentiation between solid and liquid components of the lesion. This case report was conducted to present two variations of ameloblastoma and discuss the radiographic, tomographic and MRI contribution in the differential diagnosis between ameloblastoma and odontogenic keratocyst.The signal intensity in T1-weighted MRI revealed internal fluid content in both cases, which was important in the differential diagnosis with other intraosseous lesions such as odontogenic keratocysts. This is probably due to the presence of keratin that increases the viscosity of the content and also for an intermediate signal intensity signal in T2-weighted MRI. Therefore, MRI revealed important internal characteristics of the reported lesions, which was very useful in the establishment of the differential diagnosis with other lesions.

Pneumocephalus as a delayed mastoidectomy complication

2007 ◽  
Vol 121 (4) ◽  
pp. 401-403 ◽  
Author(s):  
F Jégoux ◽  
B Godey ◽  
L Riffaud ◽  
X Morandi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Middle Ear ◽  
Clinical Signs ◽  
Cerebrospinal Fluid Leak ◽  
Accurate Information ◽  
Middle Ear Surgery ◽  
Resonance Imaging ◽  
Tegmen Tympani

We report the case of a 43-year-old woman who presented with a spontaneous pneumocephalus, 37 years after a mastoidectomy. Clinical examination showed a cerebrospinal fluid leak, meningeal herniation in the superior part of the middle ear, and an audible noise from her ear when she stood up due to the entrance of air into the cranium. A computed tomography scan and magnetic resonance imaging showed the complete destruction of the tegmen tympani and the pneumocephalus in the temporal lobe. The patient underwent an emergency operation via a double middle-ear and subtemporal approach. The meningoencephalocoele and pneumocephalus were probably due to long term pressure upon too thin a tegmen tympani.Pneumocephalus should be considered as a potential delayed post-operative complication of middle-ear surgery. Computed tomography and magnetic resonance imaging scanning supply accurate information and enable a planned surgical approach; they also allow a pathophysiological understanding and a correlation between the clinical signs and the radiological and peri-operative findings.

Virtopsy: Postmortem Imaging of Laryngeal Foreign Bodies

2009 ◽  
Vol 133 (5) ◽  
pp. 806-810 ◽  
Author(s):  
Lars Oesterhelweg ◽  
Stephan A. Bolliger ◽  
Michael J. Thali ◽  
Steffen Ross
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Foreign Body ◽  
Magnetic Resonance ◽  
Multislice Computed Tomography ◽  
Foreign Bodies ◽  
Imaging Techniques ◽  
Correct Diagnosis ◽  
Diagnostic Value ◽  
Resonance Imaging

Abstract Context.—Death from corpora aliena in the larynx is a well-known entity in forensic pathology. The correct diagnosis of this cause of death is difficult without an autopsy, and misdiagnoses by external examination alone are common. Objective.—To determine the postmortem usefulness of modern imaging techniques in the diagnosis of foreign bodies in the larynx, multislice computed tomography, magnetic resonance imaging, and postmortem full-body computed tomography–angiography were performed. Design.—Three decedents with a suspected foreign body in the larynx underwent the 3 different imaging techniques before medicolegal autopsy. Results.—Multislice computed tomography has a high diagnostic value in the noninvasive localization of a foreign body and abnormalities in the larynx. The differentiation between neoplasm or soft foreign bodies (eg, food) is possible, but difficult, by unenhanced multislice computed tomography. By magnetic resonance imaging, the discrimination of the soft tissue structures and soft foreign bodies is much easier. In addition to the postmortem multislice computed tomography, the combination with postmortem angiography will increase the diagnostic value. Conclusions.—Postmortem, cross-sectional imaging methods are highly valuable procedures for the noninvasive detection of corpora aliena in the larynx.

Magnetic Resonance Imaging and Computed Tomography of Cardiac Masses and Pseudomasses in the Atrioventricular Groove

2018 ◽  
Vol 69 (1) ◽  
pp. 78-91 ◽  
Author(s):  
James F. Glockner
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Differential Diagnosis ◽  
Magnetic Resonance ◽  
Cardiac Computed Tomography ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
Adjacent Structures ◽  
Precise Diagnosis ◽  
Pictorial Essay

The atrioventricular (AV) groove constitutes the anatomic space separating the atria and ventricles. The AV groove is often difficult to visualize at echocardiography, and suspected lesions can be further assessed with cardiac computed tomography or magnetic resonance imaging. AV groove lesions may originate from within the AV groove or extend into this space from adjacent structures. The differential diagnosis for AV groove lesions is often wide, but a precise diagnosis can sometimes be made. This pictorial essay illustrates the magnetic resonance imaging and computed tomography appearance of common and uncommon AV groove lesions, and attempts to provide a logical framework for differential diagnosis when confronted with a known or suspected lesion at cross-sectional imaging.

scholarly journals Radiološke slikovnopreiskovalne metode pri akutni možganski kapi

2015 ◽  
Vol 84 (1) ◽  
Author(s):  
Katarina Šurlan Popovič ◽  
Urška Lamot
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Acute Stroke ◽  
Brain Tissue ◽  
Comprehensive Evaluation ◽  
Accurate Information ◽  
Resonance Imaging ◽  
Imaging Evaluation ◽  
Magnetic Resonance Perfusion

Stroke is the third most common cause of death in the developed world and the leading cause of adult disability. The goals of an imaging evaluation for acute stroke when presented with patients with raised clinical suspicion of an acute stroke are to obtain accurate information about the momentary state of brain tissue. A comprehensive evaluation is best achieved with a combination of computed tomography or magnetic resonance imaging technique. Unenhanced computed tomography and magnetic resonance imaging can help rule out hemorrhage and identify early morphologic signs of acute brain ischemia. Computed tomography and magnetic resonance perfusion imaging and magnetic resonance diffusion weight imaging, can help depict unsalvageable ischemic brain tissue and the area of penumbra. Computed tomography angiography and magnetic resonance angiography are widely used techniques for assessment of both, the intracranial and neck circulation.

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