Arnold B, Jäger L, Grevers G
Department of Otorhinolaryngology-Head and Neck Surgery, Ludwig-Maximilians University, Munich, Germany.
Am J Otol. 1996 May;17(3):480-5.
High-resolution computed tomography (CT) has long been the method of choice in the visualization of the petrous bone, the internal auditory canal, and the cerebellopontine angle. The introduction of magnetic resonance imaging (MRI), especially of the three-dimensional Fourier transformation constructive interference in steady state (3DFT-CISS), has proved to be superior in the detection of soft-tissue lesions in the inner ear. The aim of this study was to visualize small anatomic structures of the inner ear and cerebellopontine angle. The examinations were performed with a standard head coil on a 1.5-T Magnetom ("Vision"; Siemens, Erlangen, Germany). The three-dimensional reconstruction of the cochlea, semicircular canals, and vestibulum allowed detailed visualization, as well as the imaging of cranial nerves VII and VIII. Our results indicate that 3DFT-CISS MRI is a valuable diagnostic tool in the evaluation of inner ear anatomy and pathology; in most cases, however, it must be supplemented by HR-CT.
长期以来，高分辨率计算机断层扫描（CT）一直是观察颞骨、内耳道和桥小脑角的首选方法。磁共振成像（MRI）的引入，尤其是三维傅里叶变换稳态构成性干扰序列（3DFT-CISS），已被证明在检测内耳软组织病变方面更具优势。本研究的目的是观察内耳和桥小脑角的小解剖结构。检查使用标准头部线圈在1.5-T Magnetom（“Vision”；西门子，德国埃尔兰根）上进行。耳蜗、半规管和前庭的三维重建能够实现详细可视化，以及对第VII和第VIII颅神经进行成像。我们的结果表明，3DFT-CISS MRI是评估内耳解剖结构和病理状况的一种有价值的诊断工具；然而，在大多数情况下，它必须辅以高分辨率CT。
