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PubMed1987

[Digital subtraction angiography and iodine 123 amphetamine scintigraphy (IMP-SPECT) in the diagnosis of acute and chronic inner-ear hearing loss].

Vascular lesions may play a role in the genesis of acute and chronic hearing loss. After exclusion of other causes the vascular status of 33 patients was examined using digital subtraction angiography (DSA) for the supra-aortic vessels, and the N-isopropyl-(I-123)p-iodoamphetamine (IMP-SPECT) technique to investigate cerebral blood flow. Not a single case of stenosis affecting the hemodynamics, of a vascular anomaly or of a cerebrovascular perfusion disorder was found.

Adult↗
PubMed1988

[Significance of bone changes in the internal auditory meatus in acoustic tumors and in the "empty" enlarged inner ear canal].

The unilateral extension of shortening of the internal auditory meatus is a very safe bony sign of the presence of a neurinoma of the auditory nerve. Differential diagnosis is necessary to exclude an "empty" extended internal auditory meatus. On the other hand, 31% of the definitely established neurinomas do not show up in the plain tomogram. These facts prove that despite the presence or absence of allegedly definite bony changes at the internal auditory meatus further diagnostic measures are imperative, especially an air meatography in conjunction with high resolution computed tomography.

Diagnosis, Differential↗
PubMed1987

Quantitative analysis of inner ear anomalies by high resolution CT scanning of the temporal bone.

High resolution CT-scanning of the temporal bone revealed malformations of the labyrinthine capsule in 50 ears in our clinic from November 1980, to the end of 1984. Detailed assessment of the nature and extent of the abnormality allowed each ear to be awarded a mathematical score. Using statistical methods, the score was then correlated with the patient's hearing in that ear. By this method it was possible, with an 80% chance of being correct, to allocate a patient into one of two groups, i.e. partial deafness or total deafness.

Adolescent↗