Role of computed tomography and magnetic resonance imaging in the assessment of temporal bone pre-cochlear and postcochlear implantation

AbstractAnatomy is the key to accurate imaging interpretation. It is essential for radiologists to thoroughly understand the normal anatomy and spatial relationships of the stomach and duodenum to accurately localize the site of abnormality. In this article, we describe in detail the gross and applied radiological anatomy of the stomach and duodenum, and the current role of various radiological investigations (including barium studies, endoscopic ultrasonography, computed tomography, and magnetic resonance imaging) in the evaluation of the diseases involving the stomach and duodenum.

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

Acta chirurgica iugoslavica ◽

10.2298/aci0903039m ◽

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.

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Bony cochlear nerve canal and internal auditory canal measures predict cochlear nerve status

The Journal of Laryngology & Otology ◽

10.1017/s0022215117001141 ◽

2017 ◽

Vol 131 (8) ◽

pp. 676-683 ◽

Cited By ~ 11

Author(s):

E Tahir ◽

M D Bajin ◽

G Atay ◽

B Ö Mocan ◽

L Sennaroğlu

Keyword(s):

Magnetic Resonance Imaging ◽

Computed Tomography ◽

Magnetic Resonance ◽

Temporal Bone ◽

Internal Auditory Canal ◽

Cochlear Nerve ◽

Resonance Imaging ◽

Canal Stenosis ◽

Canal Diameter ◽

Canal Atresia

AbstractObjectives:The bony cochlear nerve canal is the space between the fundus of the internal auditory canal and the base of the cochlear modiolus that carries cochlear nerve fibres. This study aimed to determine the distribution of bony labyrinth anomalies and cochlear nerve anomalies in patients with bony cochlear nerve canal and internal auditory canal atresia and stenosis, and then to compare the diameter of the bony cochlear nerve canal and internal auditory canal with cochlear nerve status.Methods:The study included 38 sensorineural hearing loss patients (59 ears) in whom the bony cochlear nerve canal diameter at the mid-modiolus was 1.5 mm or less. Atretic and stenotic bony cochlear nerve canals were examined separately, and internal auditory canals with a mid-point diameter of less than 2 mm were considered stenotic. Temporal bone computed tomography and magnetic resonance imaging scans were reviewed to determine cochlear nerve status.Results:Cochlear hypoplasia was noted in 44 out of 59 ears (75 per cent) with a bony cochlear nerve canal diameter at the mid-modiolus of 1.5 mm or less. Approximately 33 per cent of ears with bony cochlear nerve canal stenosis also had a stenotic internal auditory canal and 84 per cent had a hypoplastic or aplastic cochlear nerve. All patients with bony cochlear nerve canal atresia had cochlear nerve deficiency. The cochlear nerve was hypoplastic or aplastic when the diameter of the bony cochlear nerve canal was less than 1.5 mm and the diameter of the internal auditory canal was less than 2 mm.Conclusion:The cochlear nerve may be aplastic or hypoplastic even if temporal bone computed tomography findings indicate a normal cochlea. If possible, patients scheduled to receive a cochlear implant should undergo both computed tomography and magnetic resonance imaging of the temporal bone. The bony cochlear nerve canal and internal auditory canal are complementary structures, and both should be assessed to determine cochlear nerve status.

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Role of computed tomography and magnetic resonance imaging in assessment of acute aortic syndromes

Seminars in Ultrasound CT and MRI ◽

10.1016/s0887-2171(03)90014-x ◽

2003 ◽

Vol 24 (4) ◽

pp. 232-254 ◽

Cited By ~ 48

Author(s):

Katarzyna J Macura ◽

Gillberto Szarf ◽

Elliot K Fishman ◽

David A Bluemke

Keyword(s):

Magnetic Resonance Imaging ◽

Computed Tomography ◽

Magnetic Resonance ◽

Resonance Imaging ◽

Acute Aortic Syndromes

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The challenge of neuroimaging during pregnancy

International Journal of Reproduction Contraception Obstetrics and Gynecology ◽

10.18203/2320-1770.ijrcog20194859 ◽

2019 ◽

Vol 8 (11) ◽

pp. 4376

Author(s):

Kariman Suel Ghazal ◽

Abdul Rahman Shatila

Keyword(s):

Magnetic Resonance Imaging ◽

Computed Tomography ◽

Magnetic Resonance ◽

Cerebral Edema ◽

Neurological Disorders ◽

Resonance Imaging ◽

Female Reproduction ◽

Cerebellar Hemorrhage ◽

Neurologic Disorders

Background: Central nervous system conditions may affect every aspect of female reproduction from fertility to lactation. The objective of this study was to examine the performance of computed tomography and magnetic resonance imaging in the diagnosis of maternal neurologic disorders and to examine the outcome of pregnancies complicated by abnormal neurologic imaging.Methods: Retrospective observational study of 20 parturients presenting with severe neurologic symptoms (January 2006 to January 2016).Results: Abnormal neuro-radiological findings were found. Only 10% of the computed tomography-scans were normal. Both magnetic resonance imaging and computed tomography that were performed in all cases showed cerebral edema (90%) with different degrees, thereby cerebral edema was the predominant lesion. Pertaining to its localization, 65% were localized in the parietal or occipital area, 10% in the paraventricular area, and 10% were diffused. Also, 35% showed intracerebral hemorrhage and 10% showed cerebellar hemorrhage. The incidence of neurological disorders in pregnancy and puerperium was high. Epilepsy and headache were the most common primary and secondary neurological disorders.Conclusions: The role of neuroimaging in diagnosing neurological disorders is crucial for prevention of severe complications.

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