TY - JOUR
T1 - Intracochlear signal in FIESTA-C and hearings of patients with cerebellopontine angle schwannoma
AU - Kitamura, Mitsuru
AU - Oishi, Naoki
AU - Nishiyama, Takanori
AU - Hosoya, Makoto
AU - Hasebe, Natsuki
AU - Tsuzuki, Nobuyoshi
AU - Ogawa, Kaoru
N1 - Funding Information:
This research is supported by the Japan Society for the Promotion of Science KAKENHI [Grant Number JP21K09565]. The authors thank Y. Ochi and M. Yamamura for technical assistance with entering questionnaire data.
Publisher Copyright:
© 2023 Acta Oto-Laryngologica AB (Ltd).
PY - 2023
Y1 - 2023
N2 - Background: Hearing loss in patients with cerebellopontine angle (CPA) schwannoma, is thought to be caused by the damage to the cochlea and the cochlear nerve. Aim: This study aimed to examine the relationships between the intracochlear signal in magnetic resonance imaging (MRI) and hearing in patients with CPA schwannoma. Material and method: In 79 patients with CPA schwannoma, we retrospectively examined the signal in the cochlea on the affected side was compared with that on the unaffected side to determine signal degradation in fast imaging reagents steady-state acquisition with cycle phases (FIESTA-C) MRI. For hearing evaluation, pure tone audiometry (PTA), speech audiometry, distortion product otoacoustic emissions (DPOAE), and auditory brainstem response (ABR) were used. For each parameter, we examined the differences between the groups with and without signal degradation. Results: In the hearing test results, the I-wave latency of ABR was significantly longer in the group with signal degradation in FIESTA-C (1.84 ± 0.35 msec vs. 2.04 ± 0.37 msec, p = 0.048). There was no statistically significant difference in other tests. Conclusion: The MRI signal changes in the cochlear were related to the I-wave latency of ABR and reflected cochlear function. Significance: We suggested the cochlear signal changes in CPA schwannoma patients related the hearing.
AB - Background: Hearing loss in patients with cerebellopontine angle (CPA) schwannoma, is thought to be caused by the damage to the cochlea and the cochlear nerve. Aim: This study aimed to examine the relationships between the intracochlear signal in magnetic resonance imaging (MRI) and hearing in patients with CPA schwannoma. Material and method: In 79 patients with CPA schwannoma, we retrospectively examined the signal in the cochlea on the affected side was compared with that on the unaffected side to determine signal degradation in fast imaging reagents steady-state acquisition with cycle phases (FIESTA-C) MRI. For hearing evaluation, pure tone audiometry (PTA), speech audiometry, distortion product otoacoustic emissions (DPOAE), and auditory brainstem response (ABR) were used. For each parameter, we examined the differences between the groups with and without signal degradation. Results: In the hearing test results, the I-wave latency of ABR was significantly longer in the group with signal degradation in FIESTA-C (1.84 ± 0.35 msec vs. 2.04 ± 0.37 msec, p = 0.048). There was no statistically significant difference in other tests. Conclusion: The MRI signal changes in the cochlear were related to the I-wave latency of ABR and reflected cochlear function. Significance: We suggested the cochlear signal changes in CPA schwannoma patients related the hearing.
KW - ABR
KW - FIESTA-C
KW - cerebellopontine angle schwannoma
KW - cochlear signal degradation
KW - hearing evaluation
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U2 - 10.1080/00016489.2023.2166682
DO - 10.1080/00016489.2023.2166682
M3 - Article
C2 - 36661412
AN - SCOPUS:85146983583
SN - 0001-6489
VL - 143
SP - 19
EP - 23
JO - Acta Oto-Laryngologica
JF - Acta Oto-Laryngologica
IS - 1
ER -