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Updated: Aug 21, 2026
In Vivo Morphometric Analysis of Human Cranial Nerves Using Magnetic Resonance Imaging in Menière's Disease Ears and Normal Hearing Ears
Published on: February 21, 2018
[The study of MRI examination of acoustic neuromas]
Xiaohong Wu1, Hao Wu, Zhaoji Li
1Department of Otolaryngology, People's Hospital of Yiwu,Yiwu 322000.
Objective:
To discuss the examination parameters of acoustic neuromas.
Method:
The MRI features of 20 lesions 20 patients with acoustic neuroma had been analyzed retrospectively. The examinations were performed by a 1.5 Tesla superconducting magnet system transaxial T1. T2-weighted imagines and coronal or sagittal T1. T2-weighted imagines were obtained in each cases. 20 patients were examined with Gd-DTPA.
Result:
20 cases of acoustic neuroma were divided into three groups according to the tumor size: 1.1 approximately 2 cm (4 lesion) ;2. 2 approximately 4 cm (14 lesion); 3. over 4 cm (2 lesion). T1 weighted imagines shovos the equal or low signal;T2 weighted imagines shows the high signal. Low and high mixture signal will be shown when being hemorrhage or necrosis.
Conclusion:
Combining thin slice and Gd-DTPA in MRI examination was the best method to find acoustic neuroma. MRI not only can find small intracanalicular tumors, but also has advantages in demonstrating the formation of cyst and hemorrhage, the compression of adjacent anatomical structures and the tumor vessels.
