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Subjective Tinnitus: Morphological Abnormal Features in the Inner Ear
Author(s) -
Tanioka Hisaya,
Tanioka Sayaka
Publication year - 2013
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.27.1_supplement.693.1
Subject(s) - tinnitus , medicine , audiology , inner ear , radiology
Background As many as 40 million people in the United State have tinnitus. The reported prevalence range is from 7% to 32%. The evaluation of a patient with tinnitus requires a defaulted history and comprehensive audiologic evaluation to determine the appropriate radiologic study of the choice. Purpose Describe the key anatomic or physiological issues, imaging findings or imaging technique the proposed paper will address. It is important to classify tinnitus as pulsatile or nonpulsatile for treatments. So, we must know how morphological features in the inner ear of subjective tinnitus. Subjects and Methods Imaging studies of 30 patients with clinically suspected nonvascular tinnitus were analyzed from our data. Pt not only arises from the vascular causes but can also originate from nonvascular structures and is classified as nonvascular tinnitus. 3D membranous labyrinth technique was obtained by HR‐CT with direct volume rendering by the use of current workstation soft. Results Unilateral tinnitus showed the lateral lesion of the affected utricle was swelling. But, the size and shape of maculae were within normal limit within early phase by virtual histological study. And, some cases revealed abnormal image of the cochlear duct such as irregular surface or discontinuity. Conclusion All tinnitus showed swelling of the affected utricle. This cause may be lack of uniformity of endolymphatic pressure or unbalance of metabolic process of the tissue of swelling wall of the utricle may be occurred. We thought this morphological finding was due to probably both the increased endolympatic pressure and partially decreased blood flow. Indeed, improved cases of subjective tinnitus showed improvement imaging after medical treatments and cardiovascular exercise. Treatments It is conceivable that increased blood flow reduce the increased endolymphatic pressure in the inner ear by achieving a balance of endolymph. Pts take some vascular medicines and cardiovascular exercise.