- 作者：Takenori Miyashita ; Yoshihiro Toyama ; Ryuhei Inamoto ; Nozomu Mori
- 关键词：Mé ; niè ; re's disease ; Vestibular aqueduct ; Endolymphatic sac ; Computed tomography ; Vertical multiplanar reconstruction image
- 刊名：Auris Nasus Larynx
- 出版年：2012
- 出版时间：December, 2012
- 年：2012
- 卷：39
- 期：6
- 页码：567-571
- 全文大小：764 K
Objective
Previous studies, in which the vestibular aqueduct (VA) was determined using axial CT, have indicated that the VA sizes in patients with M¨¦ni¨¨re's disease were smaller than those in the subjects of the control group and that 25-35 % of ears with M¨¦ni¨¨re's disease were ¡°non-visible type.¡± In this study, in addition to obtaining the axial size, we measured the VA size along the vertical plane by using vertical multiplanar reconstruction (MPR) images.Methods
The VA size of both ears of patients with unilateral M¨¦ni¨¨re's disease (n = 34) and of subjects of the control group (n = 30) was measured by using the vertical MPR and the axial CT images.
Results
The VA size was measured along the axial and vertical planes in all subjects. The parameters measured on the axial image of the VA correlated with each other; however, the parameters on the vertical MPR image did not correlate with those on the axial image. Values of parameters in the affected and nonaffected ears with M¨¦ni¨¨re's disease tended to be smaller than those in the control ear. The external aperture areas of the VA fenestra of the affected and nonaffected ears of patients with M¨¦ni¨¨re's disease were significantly smaller than that for the control ears.
Conclusion
Our findings suggest that the vertical parameters of the VA yield information that is independent of that provided by the axial parameters. In both ears of patients with unilateral M¨¦ni¨¨re's disease, the VA tended to be thinner than those in the control ear.