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A Case of Hearing Loss after Bilateral Putaminal Hemorrhage: A Diffusion-tensor Imaging Study
Tetsuo Koyama1,2, Kazuhisa Domen2
1Department of Rehabilitation Medicine, Nishinomiya Kyoritsu Neurosurgical Hospital, 11-1 Imazu-Yamanaka-cho, Nishinomiya, Hyogo 663-8211, Japan.
Progress in Rehabilitation Medicine
|August 14, 2020
Summary
Diffusion-tensor imaging (DTI) revealed disrupted acoustic radiation fibers in a patient with hearing loss following bilateral putaminal hemorrhage. This neuroimaging technique identified the specific neuroanatomical cause of auditory dysfunction.
Area of Science:
- Neuroimaging
- Neuroscience
- Audiology
Background:
- Magnetic resonance diffusion-tensor imaging (DTI) assesses neural fiber integrity.
- Bilateral putaminal hemorrhage can lead to neurological deficits, including hearing loss.
Observation:
- A 59-year-old woman experienced severe hearing loss after a right putaminal hemorrhage, with intact reading and writing skills.
- Auditory examinations showed normal brainstem response but severe hearing impairment (105 dB).
Findings:
- DTI revealed lesions within the bilateral acoustic radiations.
- Fiber tracking analysis demonstrated bilateral disruption of acoustic radiation fibers, correlating with hearing loss.
Implications:
- DTI can identify the neuroanatomical basis of hearing loss post-hemorrhage.
- This case highlights the utility of DTI in diagnosing auditory pathway damage.
