Furuya Y, Ryu H, Uemura K, Sugiyama K, Isoda H, Hasegawa S, Takahashi M, Kaneko M
Department of Neurosurgery, Hamamatsu University School of Medicine, Japan.
J Comput Assist Tomogr. 1992 Jul-Aug;16(4):503-5. doi: 10.1097/00004728-199207000-00001.
Twelve patients with clinical indications of intracranial neurovascular compression (6, hemifacial spasm; 4, trigeminal neuralgia; 2, vertigo and tinnitus) were studied by MRI. Axial 1 mm thick slices were obtained in a 1.5 T unit using a three-dimensional (3D) fast low angle shot data set of 32 contiguous slices. The data were post-processed with multiplanar reconstruction algorithms to obtain oblique sagittal (along the long axis of a nerve) images or coronal images with a slice thickness of 0.8 mm. The MR angiographic images were also obtained from the same 3D data set with maximum intensity projection algorithms. The MR studies showed that 9 of 12 patients had neurovascular compression caused by one or two arteries. These findings were verified at surgery. In two of the remaining three patients, MRI failed to delineate the affected nerves compressed by a vein in one, and a previously applied prosthesis in the other. In the last patient no neurovascular compression was found by MRI or at surgery.
对12例有颅内神经血管压迫临床指征的患者（6例面肌痉挛；4例三叉神经痛；2例眩晕和耳鸣）进行了磁共振成像（MRI）研究。在1.5T设备上，使用32个连续层面的三维（3D）快速低角度激发数据集获取1mm厚的轴向层面图像。数据用多平面重建算法进行后处理，以获得斜矢状面（沿神经长轴）图像或层面厚度为0.8mm的冠状面图像。磁共振血管造影图像也从相同的3D数据集中采用最大强度投影算法获得。MRI研究显示，12例患者中有9例存在由一条或两条动脉引起的神经血管压迫。这些发现经手术证实。其余3例患者中，1例MRI未能显示被静脉压迫的受累神经，另1例未能显示先前植入的假体。最后1例患者MRI及手术均未发现神经血管压迫。
