MRI of inner ear and facial nerve pathology using 3D MP-RAGE and 3D CISS sequences.
MRI of inner ear and facial nerve pathology using 3D MP-RAGE and 3D CISS sequences.
复制标题
使用 3D MP-RAGE 和 3D CISS 序列对内耳和面神经病理进行 MRI。
DOI：
10.1259/bjr.70.834.9227246
复制
发表时间：
1997
期刊：
影响因子：
--
通讯作者：
J. Strutz
中科院分区：
文献类型：
--
作者：
P. Held;C. Fellner;F. Fellner;J. Seitz;S. Graf;M. Hilbert;J. Strutz
本研究的目的是评价3D CISS、非增强3D MP-MRI和增强3D MP-MRI对桥小脑角、内耳道、迷路和面神经的肿瘤、血管和炎性病变的诊断价值。（25名男性，13名女性;年龄1-77岁，平均年龄43 +/- 20岁）。T2* 加权3D CISS序列（TR 14.65 ms，TE 21 ms，翻转角65度，体素大小0.7 x 0.7 x 0.7 mm 3）和T1加权3D MP-MRI序列（TR 12.5 ms，TE 5 ms，T1 300 ms，翻转角15度，体素尺寸1.0 x 0.9 x 0.9 mm 3），有和无造影剂（钆-DTPA，0.1 mmol kg-1体重）。对比剂增强的3D MP-病理学增强的结果被发现在以下病变中：小脑桥脑角（CPA）和内耳道（IAC）的神经鞘瘤，4; IAC的神经鞘瘤，7和小脑肿瘤，3;后颅窝淋巴瘤，1;耳道脑膜瘤，1;急性小脑扁桃体炎，15和第七脑神经炎，10。3D CISS填充缺损的结果发现以下病变：CPA、IAC或迷路神经鞘瘤，14例;淋巴瘤，1例;脑膜瘤，1例;小脑纤维化，13例和IAC瘢痕，4例。这些结果表明，非增强和对比增强的3D MP-MRI和3D CISS是互补的MR成像模式。T1加权3D MP-MRI优于T1加权2D（快速）自旋回波序列，因为3D序列的多平面重建可能性在内耳和面神经的情况下非常有用。
The aim of this study was to evaluate 3D CISS, unenhanced 3D MP-RAGE and contrast enhanced 3D MP-RAGE for the diagnosis of neoplastic, vascular and inflammatory lesions of the cerebellopontine angle, the inner auditory canal, the labyrinth and the facial nerve 42 MR examinations were performed on a total of 38 patients (25 males, 13 females; aged 1-77 years, mean age 43 +/- 20 years) using a 1.5 T MR unit. A T2* weighted 3D CISS sequence (TR 14.65 ms, TE 21 ms, flip angle 65 degrees, voxel size 0.7 x 0.7 x 0.7 mm3) and a T1 weighted 3D MP-RAGE sequence (TR 12.5 ms, TE 5 ms, T1 300 ms, flip angle 15 degrees, voxel size 1.0 x 0.9 x 0.9 mm3) with and without contrast medium (gadolinium-DTPA, 0.1 mmol kg-1 body weight) were used. Results of contrast enhanced 3D MP-RAGE-pathological enhancement was found in the following lesions: schwannomas of the cerebellopontine angle (CPA) and the internal auditory canal (IAC), 4; schwannomas of the IAC, 7 and labyrinthine tumours, 3; posterior fossa lymphoma, 1; meatal meningioma, 1; acute labyrinthitis, 15 and neuritis of the seventh cranial nerve, 10. Results of 3D CISS-filling defects were found with the following lesions: schwannomas of the CPA, the IAC or labyrinth, 14; lymphoma, 1; meningioma, 1; labyrinthine fibrosis, 13 and scar in the IAC, 4. These results suggest that unenhanced and contrast enhanced 3D MP-RAGE and 3D CISS are complementary MR imaging modalities. T1 weighted 3D MP-RAGE is preferred to T1 weighted 2D (turbo) spin echo sequences because of the multiplanar reconstruction possibilities of 3D sequences, which are very useful in the case of the inner ear and facial nerve.