Auditory Brainstem Response and Magnetic Resonance Imaging for Acoustic Neuromas

AbstractObjective:The aim of this study was to investigate the contribution of electronystagmography and magnetic resonance imaging to the aetiological diagnosis of vertigo and unsteadiness, in a population in which the history and clinical examination provide no conclusive diagnosis of the origin of the dysfunction (i.e. peripheral or central).Patients and methods:This retrospective study included 102 patients, who underwent full ENT clinical evaluation, history and neurotological assessment (including pure tone audiography, auditory brainstem response testing, electronystagmography and magnetic resonance imaging).Results:Electronystagmography contributed to establishment of a diagnosis in 53/102 patients (52 per cent), whereas magnetic resonance imaging did the same in four of 102 patients (3.9 per cent).Conclusion:Electronystagmography remains the most useful examination for aetiological diagnosis of patients with vertigo and unsteadiness, since the actual number of patients with vertigo and unsteadiness of central origin is small (3.9 per cent), even in a population in which history and clinical examination may indicate an increased probability of central nervous system dysfunction.

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Vestibular signs and symptoms of volumetric abnormalities of the vestibular aqueduct

The Journal of Laryngology & Otology ◽

10.1017/s0022215107000400 ◽

2007 ◽

Vol 122 (6) ◽

pp. 557-563 ◽

Cited By ~ 3

Author(s):

L Manzari

Keyword(s):

Magnetic Resonance Imaging ◽

Computed Tomography ◽

Magnetic Resonance ◽

Motion Sickness ◽

Auditory Brainstem ◽

Vestibular Evoked Myogenic Potentials ◽

Resonance Imaging ◽

Vestibular Evoked Myogenic Potential ◽

Vestibular Aqueduct ◽

Brainstem Response

AbstractObjective:The objective of this study was to identify a pattern of signs, symptoms and neuroradiological findings which would assist investigation of vestibular function (especially otolith function) in a group of adult patients with anatomical alterations of the endolymphatic aqueduct and sac.Methods:Fifteen subjects affected by volumetric abnormalities of the vestibular aqueduct were selected from a cohort of patients referred to a tertiary referral neurotological centre between 1 January 2004 and 30 June 2006. All patients underwent accurate clinical history-taking and were evaluated using a standardised set of bedside and instrumental neurotological tests (i.e. audiometry, auditory brainstem response and vestibular evoked myogenic potentials). After these tests, each patient underwent computed tomography and magnetic resonance imaging in order to accurately evaluate the middle ear, labyrinthine capsule and internal auditory canals. These evaluations confirmed clinical suspicion of volumetric abnormalities of the vestibular aqueduct and endolymphatic sac.Results:All the patients with a defined volumetric alteration in the region of the vestibular aqueduct and endolympatic sac reported a typical pattern of symptoms and signs. The most obvious and frequent symptoms in these patients were migraine-related vertigo (using the Neuhauser criteria, 10 of 15, 66.6 per cent), ‘motion sickness’ (12 of 15, 80 per cent), oscillopsia (nine of 15, 60 per cent) and dizziness (14 of 15, 93.3 per cent). Clinical examination results for the selected patients allowed some useful speculative conclusions. During neurotological evaluation, two instrumental methodologies were especially useful diagnostically: vestibular evoked myogenic potentials of the neck, and the mastoid vibration test at 100 Hz.Conclusions:Dysfunction of the vestibular aqueduct is suggested by symptomatology characterised by: migraine-related vertigo, unstable or recurring oscillopsia, lowering of the vestibular evoked myogenic potential threshold, hypoacusis, anamnestic report of motion sickness, and nystagmus induced by mastoid vibration and head-shaking. Computed tomography and magnetic resonance imaging are needed in order to confirm clinical suspicions.

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Brain magnetic resonance imaging findings and auditory brainstem response in a child with spastic paraplegia 2 due to a PLP1 splice site mutation

Brain and Development ◽

10.1016/j.braindev.2014.03.001 ◽

2015 ◽

Vol 37 (1) ◽

pp. 158-162 ◽

Cited By ~ 3

Author(s):

Kazuo Kubota ◽

Yoshiaki Saito ◽

Chihiro Ohba ◽

Hirotomo Saitsu ◽

Tetsuhiro Fukuyama ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Auditory Brainstem Response ◽

Brain Magnetic Resonance Imaging ◽

Splice Site Mutation ◽

Auditory Brainstem ◽

Imaging Findings ◽

Spastic Paraplegia ◽

Resonance Imaging ◽

Site Mutation ◽

Brainstem Response

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Diagnostic Implications of Stimulus Polarity Effects on the Auditory Brainstem Response

Journal of the American Academy of Audiology ◽

10.1055/s-0040-1715950 ◽

2002 ◽

Vol 13 (02) ◽

pp. 072-082 ◽

Cited By ~ 1

Author(s):

Cynthia G. Fowler ◽

Christopher D. Bauch ◽

Wayne O. Olsen

Keyword(s):

Mayo Clinic ◽

Auditory Brainstem Response ◽

Auditory Brainstem ◽

The Other ◽

Intersubject Variability ◽

Acoustic Neuromas ◽

Full Complement ◽

Brainstem Response ◽

Polarity Effects ◽

Click Polarity

The purpose of this study was to determine whether clicks presented in rarefaction or condensation modes produce more accurate diaghostic information. Subjects were 20 consecutive patients who were seen at the Mayo Clinic for unilateral acoustic neuromas. The nontumor ear served as a control to minimize intersubject variability in the latencies. A standard audio logic evaluation was followed by an auditory brainstem response (ABR) test for which the stimuli were rarefaction and condensation clicks. Responses were analyzed for the presence of waves I, III, and V; absolute latencies of waves I, III, and V; interpeak intervals I–III, III–V, and I–V; and interaurallatency difference for wave V. The results indicated that measures from both polarities were similar in this set of patients and that neither click polarity provided diagnostic advantages over the other. Recommendations are to collect ABRs to both click polarities individually to obtain the full complement of waves on which to base the diagnostic impression.

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Audiological findings in glomus tumours

The Journal of Laryngology & Otology ◽

10.1017/s0022215100136953 ◽

1997 ◽

Vol 111 (3) ◽

pp. 218-222 ◽

Cited By ~ 2

Author(s):

William W. Qiu ◽

Shengguang S. Yin ◽

Fred J. Stucker ◽

Mardjohan Hardjasudarma

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Auditory System ◽

Middle Ear ◽

Otoacoustic Emissions ◽

Cerebellopontine Angle ◽

Auditory Brainstem ◽

Auditory Brainstem Responses ◽

Resonance Imaging ◽

Magnetic Resonance Imaging Mri

AbstractGlomus tumours involving the middle ear and the cerebellopontine angle are reported with emphasis on audiological findings. Magnetic resonance imaging (MRI), angiographic and pathological results are presented. Audiological tests, including impedance audiometry, evoked otoacoustic emissions and auditory brainstem responses, are valuable in evaluation of the effect of glomus tumours on the auditory system as well as their pathological extent.

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