Diagnosis of Acoustic Neuromas
Diagnosis begins with an audiogram. The hearing ability of each ear is evaluated. The evaluation may indicate loss of hearing and speech discrimination.
Imaging techniques such as magnetic resonance imaging, or MRI, and computed tomography, or CT, scan can highlight acoustic tumors. MRI is preferred because it can clearly define acoustic neuromas, even if they are small.
An auditory brainstem response, or ABR, test may also be performed. An abnormal result of the ABR test can imply possible diagnosis of acoustic neuroma. However, an abnormal result of this test should be confirmed by a subsequent MRI.