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Is it necessary to do temporal bone computed tomography of the internal auditory canal in tinnitus with normal hearing?

Kumral TL, Yıldırım G, Yılmaz HB, Ulusoy S, Berkiten G, Onol SD, Ozturkçu Y, Uyar Y - ScientificWorldJournal (2013)

Bottom Line: Regarding the right and left internal acoustic canals measurements (inlet, midcanal, and outlet canal lengths), there were no significant differences between the measurements of the control and tinnitus groups (P > 0.005).There was no narrowness in the internal acoustic canal of the tinnitus group compared with the control group.There were no anatomical differences in the etiology of tinnitus rather than physiological degeneration in the nerves.

View Article: PubMed Central - PubMed

Affiliation: Department of Otorhinolaryngology, Head and Neck Surgery, Okmeydanı Training and Research Hospital, Darülaceze Caddesi, No. 25 Okmeydanı, Şişli, İstanbul 34384, Turkey.

ABSTRACT

Objective: To investigate the compression of the vestibulocochlear nerve in the etiology of the tinnitus in the normal hearing ears with temporal bone computed tomography scans.

Methods: A prospective nonrandomized study of 30 bilateral tinnitus and 30 normal hearing patients enrolled in this study.

Results: A total of 60 patients (ages ranged from 16 to 87) were included. The tinnitus group comprised 11 males and 19 females (mean age 49,50 ± 12,008) and the control group comprised 6 males and 24 females (mean age 39,47 ± 12,544). Regarding the right and left internal acoustic canals measurements (inlet, midcanal, and outlet canal lengths), there were no significant differences between the measurements of the control and tinnitus groups (P > 0.005). There was no narrowness in the internal acoustic canal of the tinnitus group compared with the control group. High-frequency audiometric measurements of the right and left ears tinnitus group at 8000, 9000, 10000, 11200, 12500, 14000, 16000, and 18000 Hz frequencies were significantly lower than the control group thresholds (P < 0.05). There was high-frequency hearing loss in the tinnitus group.

Conclusion: There were no anatomical differences in the etiology of tinnitus rather than physiological degeneration in the nerves.

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Related in: MedlinePlus

The internal auditory canal inlet, mid-canal, and outlet canal lengths were measured at the most distinctive cross-section of the seventh and eight cranial nerves bifurcation.
© Copyright Policy - open-access
Related In: Results  -  Collection


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fig1: The internal auditory canal inlet, mid-canal, and outlet canal lengths were measured at the most distinctive cross-section of the seventh and eight cranial nerves bifurcation.

Mentions: Both tinnitus and control groups had high-frequency audiogram at 8000, 9000, 10000, 11200, 12500, 14000, 16000, 18000 and 20000 Hz frequencies. All patients had temporal bone computed tomography imaging. The internal auditory canal inlet, mid-canal, and outlet canal lengths were measured at the most distinctive cross-section of the seventh and eighth cranial nerves bifurcation (Figure 1). Patients who were admitted to our outpatient clinic other than ear disease with the temporal bone computed tomography results were taken as control group. Informed consent and ethical approval have been taken from all the participants. Measurements of internal auditory canal inlet, mid-canal, and outlet canal lengths were compared between the groups.


Is it necessary to do temporal bone computed tomography of the internal auditory canal in tinnitus with normal hearing?

Kumral TL, Yıldırım G, Yılmaz HB, Ulusoy S, Berkiten G, Onol SD, Ozturkçu Y, Uyar Y - ScientificWorldJournal (2013)

The internal auditory canal inlet, mid-canal, and outlet canal lengths were measured at the most distinctive cross-section of the seventh and eight cranial nerves bifurcation.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3860130&req=5

fig1: The internal auditory canal inlet, mid-canal, and outlet canal lengths were measured at the most distinctive cross-section of the seventh and eight cranial nerves bifurcation.
Mentions: Both tinnitus and control groups had high-frequency audiogram at 8000, 9000, 10000, 11200, 12500, 14000, 16000, 18000 and 20000 Hz frequencies. All patients had temporal bone computed tomography imaging. The internal auditory canal inlet, mid-canal, and outlet canal lengths were measured at the most distinctive cross-section of the seventh and eighth cranial nerves bifurcation (Figure 1). Patients who were admitted to our outpatient clinic other than ear disease with the temporal bone computed tomography results were taken as control group. Informed consent and ethical approval have been taken from all the participants. Measurements of internal auditory canal inlet, mid-canal, and outlet canal lengths were compared between the groups.

Bottom Line: Regarding the right and left internal acoustic canals measurements (inlet, midcanal, and outlet canal lengths), there were no significant differences between the measurements of the control and tinnitus groups (P > 0.005).There was no narrowness in the internal acoustic canal of the tinnitus group compared with the control group.There were no anatomical differences in the etiology of tinnitus rather than physiological degeneration in the nerves.

View Article: PubMed Central - PubMed

Affiliation: Department of Otorhinolaryngology, Head and Neck Surgery, Okmeydanı Training and Research Hospital, Darülaceze Caddesi, No. 25 Okmeydanı, Şişli, İstanbul 34384, Turkey.

ABSTRACT

Objective: To investigate the compression of the vestibulocochlear nerve in the etiology of the tinnitus in the normal hearing ears with temporal bone computed tomography scans.

Methods: A prospective nonrandomized study of 30 bilateral tinnitus and 30 normal hearing patients enrolled in this study.

Results: A total of 60 patients (ages ranged from 16 to 87) were included. The tinnitus group comprised 11 males and 19 females (mean age 49,50 ± 12,008) and the control group comprised 6 males and 24 females (mean age 39,47 ± 12,544). Regarding the right and left internal acoustic canals measurements (inlet, midcanal, and outlet canal lengths), there were no significant differences between the measurements of the control and tinnitus groups (P > 0.005). There was no narrowness in the internal acoustic canal of the tinnitus group compared with the control group. High-frequency audiometric measurements of the right and left ears tinnitus group at 8000, 9000, 10000, 11200, 12500, 14000, 16000, and 18000 Hz frequencies were significantly lower than the control group thresholds (P < 0.05). There was high-frequency hearing loss in the tinnitus group.

Conclusion: There were no anatomical differences in the etiology of tinnitus rather than physiological degeneration in the nerves.

Show MeSH
Related in: MedlinePlus