The Use of Magnetic Resonance Imaging with High-Resolution CT in the Evaluation of Facial Paralysis

1989 ◽  
Vol 101 (4) ◽  
pp. 449-458 ◽  
Author(s):  
Mitchell K. Schwaber ◽  
David Zealear ◽  
James L. Netterville ◽  
Michael Seshul ◽  
Robert H. Ossoff
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Facial Nerve ◽  
Facial Paralysis ◽  
Case Reports ◽  
Resonance Imaging ◽  
High Resolution Computed Tomography ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

Magnetic resonance imaging (MRI) has been widely used in the evaluation of suspected acoustic neuroma, but has not received the same attention with respect to facial paralysis. High-resolution computed tomography (HRCT) has been the radiologic test of choice to evaluate the facial nerve. The necessary HRCT projections, slices, and enhancement techniques to visualize each segment have been outlined. We have developed a radiologic protocol that uses MRI in conjunction with HRCT, applying the strengths of each to evaluate the facial nerve. We have evaluated 15 patients and have found that MRI is the better study to evaluate the brain stem/cerebellopontine angle segment of the facial nerve and better evaluates bone-soft tissue Interfaces. HRCT is better in the evaluation of the intratemporal segment of the facial nerve and the assessment of the anatomic perspectives of a lesion within the temporal bone. The results are discussed and case reports Illustrate the efficacy of this approach.

scholarly journals Facial nerve anomalies in paediatric cochlear implant candidates: radiological evaluation

2016 ◽  
Vol 131 (1) ◽  
pp. 26-31 ◽  
Author(s):  
F B Palabiyik ◽  
K Hacikurt ◽  
Z Yazici
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Facial Nerve ◽  
Cochlear Implant ◽  
Inner Ear ◽  
Resonance Imaging ◽  
High Resolution Computed Tomography ◽  
Ear Anomalies

AbstractBackground:Pre-operative radiological identification of facial nerve anomalies can help prevent intra-operative facial nerve injury during cochlear implantation. This study aimed to evaluate the incidence and configuration of facial nerve anomalies and their concurrence with inner-ear anomalies in cochlear implant candidates.Methods:Inner-ear and concomitant facial nerve anomalies were evaluated by magnetic resonance imaging and temporal high-resolution computed tomography in 48 children with congenital sensorineural hearing loss who were cochlear implant candidates.Results:Inner-ear anomalies were present in 11 out of 48 patients (23 per cent) and concomitant facial nerve anomalies were present on 7 sides in 4 patients (7 per cent of the total). Facial nerve anomalies were accompanied by cochlear or vestibular malformation.Conclusion:Potential facial nerve abnormalities should always be considered in patients with inner-ear anomalies. Pre-operative facial nerve imaging can increase the surgeon's confidence to plan and perform cochlear implantation. Magnetic resonance imaging should be used to detect inner-ear anomalies; if these are identified, temporal high-resolution computed tomography should be used to evaluate the facial nerve.

scholarly journals High resolution magnetic resonance imaging for exposing facial nerve zonal vulnerability to microbleeds: A rare cause of facial palsy

2017 ◽  
Vol 30 (4) ◽  
pp. 385-388
Author(s):  
Charlie Chia-Tsong Hsu ◽  
Dalveer Singh ◽  
Trevor William Watkins ◽  
Gigi Nga Chi Kwan ◽  
Sachintha Hapugoda
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Facial Nerve ◽  
Facial Paralysis ◽  
Internal Auditory Canal ◽  
Sudden Onset ◽  
Partial Recovery ◽  
Resonance Imaging ◽  
Rapid Acquisition

Background We report a case of hypertensive microbleeds strategically located at the attached segment (AS) and root entry zone (REZ) at the left facial nerve causing facial paralysis. Case Report A 60-year-old woman presented with sudden onset left facial paralysis. Medical history was significant for poorly controlled hypertension secondary to bilateral adrenal hyperplasia (primary hyperaldosteronism). The patient was initially treated for presumptive Bell’s palsy. Subsequent magnetic resonance imaging of the brain and internal auditory canal showed two microbleeds at the left cerebellopontine angle. Dedicated coronal T1 magnetization prepared rapid acquisition gradient echo and T2 sampling perfection with application optimized contrasts using different flip angle evolution sequences revealed two acute microbleeds located at the attached AS and REZ of the left facial nerve. The patient experienced only partial recovery from House–Brackmann grade IV facial paralysis at presentation to a House–Brackmann grade III facial paralysis at 1 year of follow up. Conclusions To the best of the authors’ knowledge, this is the first reported case of facial paralysis caused by microbleeds directly affecting the vulnerable AS and REZ facial nerve segments. We discuss the zonal microanatomy of the facial nerve and the crucial role of high resolution MRI for diagnosis.

scholarly journals Bone marrow abnormalities detected by magnetic resonance imaging as initial sign of hematologic malignancies

2018 ◽  
Author(s):  
Ida Sofie Grønningsæter ◽  
Aymen Bushra Ahmed ◽  
Nils Vetti ◽  
Silje Johansen ◽  
Øystein Bruserud ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Bone Marrow ◽  
Magnetic Resonance ◽  
Case Reports ◽  
Cell Types ◽  
Hematologic Malignancies ◽  
Resonance Imaging ◽  
Initial Sign ◽  
Magnetic Resonance Imaging Mri

The increasing use of radiological examination, especially magnetic resonance imaging (MRI), will probably increase the risk of unintended discovery of bone marrow abnormalities in patients where a hematologic disease would not be expected. In this paper we present four patients with different hematologic malignancies of nonplasma cell types. In all patients the MRI bone marrow abnormalities represent an initial presentation of the disease. These case reports illustrate the importance of a careful diagnostic follow-up without delay of patients with MRI bone marrow abnormalities, because such abnormalities can represent the first sign of both acute promyelocytic leukemia as well as other variants of acute leukemia.

scholarly journals 876 Disorders of the Brain Revealed by Magnetic Resonance Imaging (MRI) in Infants with Severe Congenital Cytomegaly

2010 ◽  
Vol 68 ◽  
pp. 440-440
Author(s):  
B Milewska-Bobula ◽  
B Lipka ◽  
J Zebrowska ◽  
E Jurkiewicz ◽  
I Pakula-Kosciesza ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

High-resolution venography of the brain using magnetic resonance imaging

1998 ◽  
Vol 6 (1) ◽  
pp. 62-69 ◽  
Author(s):  
J REICHENBACH ◽  
M ESSIG ◽  
E HAACKE ◽  
B LEE ◽  
C PRZETAK ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Resonance Imaging ◽  
The Brain
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