Three-Dimensional Fluid-Attenuated Inversion Recovery Magnetic Resonance Imaging Investigation of Inner Ear Disturbances in Cases of Middle Ear Cholesteatoma With Labyrinthine Fistula

2007 ◽  
Vol 28 (8) ◽  
pp. 1029-1033 ◽  
Author(s):  
Michihiko Sone ◽  
Terukazu Mizuno ◽  
Makoto Sugiura ◽  
Shinji Naganawa ◽  
Tsutomu Nakashima
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Inner Ear ◽  
Middle Ear ◽  
Three Dimensional ◽  
Inversion Recovery ◽  
Resonance Imaging ◽  
Labyrinthine Fistula ◽  
Middle Ear Cholesteatoma ◽  
Fluid Attenuated Inversion Recovery

Usefulness of three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging to detect inner-ear abnormalities in patients with sudden sensorineural hearing loss

2014 ◽  
Vol 129 (1) ◽  
pp. 11-15 ◽  
Author(s):  
T Tanigawa ◽  
R Shibata ◽  
H Tanaka ◽  
M Gosho ◽  
N Katahira ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Hearing Loss ◽  
Magnetic Resonance ◽  
Sensorineural Hearing Loss ◽  
Inner Ear ◽  
Three Dimensional ◽  
Inversion Recovery ◽  
Sensorineural Hearing ◽  
Resonance Imaging ◽  
Fluid Attenuated Inversion Recovery

AbstractObjective:Three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging has been used to detect alterations in the composition of inner-ear fluid. This study investigated the association between hearing level and the signal intensity of pre- and post-contrast three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging in patients with sudden-onset sensorineural hearing loss.Method:Three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging was performed in 18 patients with sudden-onset sensorineural hearing loss: 12 patients with mild-to-moderate sensorineural hearing loss (baseline hearing levels of 60 dB or less) and 6 patients with severe-to-profound sensorineural hearing loss (baseline hearing levels of more than 60 dB).Results:High-intensity signals in the inner ear were observed in two of the six patients (33 per cent) with severe-to-profound sensorineural hearing loss, but not in those with mild-to-moderate sensorineural hearing loss (mid-p test, p = 0.049). These signals were observed on magnetic resonance imaging scans 6 or 18 days after sensorineural hearing loss onset.Conclusion:The results indicate that three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging is not a useful tool for detecting inner-ear abnormalities in patients with mild sensorineural hearing loss.

Three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging findings in a patient with relapsing polychondritis

2014 ◽  
Vol 128 (2) ◽  
pp. 192-194 ◽  
Author(s):  
M Kato ◽  
N Katayama ◽  
S Naganawa ◽  
T Nakashima
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Standard Dose ◽  
Three Dimensional ◽  
Relapsing Polychondritis ◽  
Inversion Recovery ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Radiological Report ◽  
Fluid Attenuated Inversion Recovery

AbstractObjective:We report three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging findings in a patient with relapsing polychondritis.Method:Case report.Result:A 76-year-old woman initially presented with bilateral auricular swelling together with dyspnoea. Three months later, she experienced left hearing loss and recurrent vertigo. A biopsy of the auricle was performed and relapsing polychondritis was diagnosed. The patient underwent three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging 4 hours after intravenous injection of a standard dose of gadolinium. Gadolinium enhancement was visible throughout the vestibule and the endolymphatic space could not be visualised, suggesting breakdown of the blood–labyrinth barrier.Conclusion:This is the first radiological report to demonstrate breakdown of the blood–labyrinth barrier in a case of relapsing polychondritis with inner ear impairment.

scholarly journals Low-field magnetic resonance imaging of otitis media in two cats: a case report

2017 ◽  
Vol 62 (No. 2) ◽  
pp. 111-115
Author(s):  
Y. Zhalniarovich ◽  
A. Przeworski ◽  
J. Glodek ◽  
Z. Adamiak
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Otitis Media ◽  
Middle Ear ◽  
Inversion Recovery ◽  
Inversion Recovery Sequence ◽  
Resonance Imaging ◽  
Recovery Sequence ◽  
Post Contrast ◽  
Fluid Attenuated Inversion Recovery

Otitis media is a common disease in clinical veterinary practice. Although low-field magnetic resonance imaging reports for otitis media in dogs exist, in cats detailed information is missing. Radiography is helpful in diagnosing chronic inflammation, but may be insufficient during the initial phase of inflammation. For this reason, this report describes the magnetic resonance findings in two cats with otitis media. In both cases, middle ear empyema was detected. Magnetic resonance imaging of middle ear disorders in cats should contain pre- and post-contrast T1-weighted sequences in the dorsal and transverse planes, a T2-weighted sequence in the dorsal and transverse planes and a fluid-attenuated inversion recovery sequence in the dorsal or transverse planes. On pre-contrast T1-weighted images, the empyema had an intensity similar to that of brain tissue with a delicate hyper-intensity in the middle. On post-contrast T1-weighted images, the material had non-uniform enhancement in the dorsolateral compartment and circumference enhancement in the ventromedial compartment of the tympanic bulla with a hypo-intense centre. On T2-weighted images, the mass had heterogeneously increased signal intensity to brain tissue, but was less intense than cerebrospinal fluid. In the fluid-attenuated inversion recovery sequence, the pathological lesion was distinctly hyper-intense in comparison to other tissues with a narrow area of increased signal intensity in the middle of the ventromedial tympanic bulla compartment. Magnetic resonance imaging is commonly used for the visualisation of different disorders of the membranous labyrinth and allows the differentiation of chronic hematomas, empyemas and middle and internal ear neoplasia. The recommended magnetic resonance protocol of the middle ear should include pre- and post-contrast T1 sequences in the dorsal and transverse planes, the T2 sequence in the dorsal and transverse planes and the fluid-attenuated inversion recovery sequence in the dorsal or transverse planes.

scholarly journals Thrombolysis Outcomes in Acute Ischemic Stroke by Fluid-Attenuated Inversion Recovery Hyperintense Arteries

Stroke ◽  
2020 ◽  
Vol 51 (7) ◽  
pp. 2240-2243
Author(s):  
Zien Zhou ◽  
Sohei Yoshimura ◽  
Candice Delcourt ◽  
Richard I. Lindley ◽  
Shoujiang You ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Ischemic Stroke ◽  
Magnetic Resonance ◽  
Acute Ischemic Stroke ◽  
Infarct Volume ◽  
Inversion Recovery ◽  
Modified Rankin Scale ◽  
Resonance Imaging ◽  
Scale Scores ◽  
Fluid Attenuated Inversion Recovery

Background and Purpose: To determine factors associated with fluid-attenuated inversion recovery (FLAIR) hyperintense arteries (FLAIR-HAs) on magnetic resonance imaging and their prognostic significance in thrombolysis-treated patients with acute ischemic stroke from the ENCHANTED (Enhanced Control of Hypertension and Thrombolysis Stroke Study) trial alteplase-dose arm. Methods: Patients with acute ischemic stroke (N=293) with brain magnetic resonance imaging (FLAIR and diffusion-weighted imaging sequences) scanned <4.5 hours of symptom onset were assessed for location and extent (score) of FLAIR-HAs, infarct volume, large vessel occlusion (LVO), and other ischemic signs. Logistic regression models were used to determine predictors of FLAIR-HAs and the association of FLAIR-HAs with 90-day outcomes: favorable functional outcome (primary; modified Rankin Scale scores, 0–1), other modified Rankin Scale scores, and intracerebral hemorrhage. Results: Prior atrial fibrillation, LVO, large infarct volume, and anterior circulation infarction were independently associated with FLAIR-HAs. The rate of modified Rankin Scale scores 0 to 1 was numerically lower in patients with FLAIR-HAs versus without (69/152 [45.4%] versus 75/131 [57.3%]), as was the subset of LVO (37/93 [39.8%] versus 9/16 [56.3%]), but not in those without LVO (25/36 [69.4%] versus 60/106 [56.6%]). After adjustment for covariables, FLAIR-HAs were independently associated with increased primary outcome (adjusted odds ratio [95% CI]: overall 4.14 [1.63–10.50]; with LVO 4.92 [0.87–27.86]; no LVO 6.16 [1.57–24.14]) despite an increased risk of hemorrhagic infarct (4.77 [1.12–20.26]). Conclusions: FLAIR-HAs are more frequent in acute ischemic stroke with cardioembolic features and indicate potential for a favorable prognosis in thrombolysis-treated patients possibly mediated by LVO. Registration: URL: https://www.clinicaltrials.gov . Unique identifier: NCT01422616.

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