Watanabe Y, Sugai Y, Hosoya T, Yamaguchi K, Aoyagi M
Department of Radiology and Otolaryngology, Yamagata University School of Medicine, Japan.
Acta Otolaryngol Suppl. 2000;542:44-8. doi: 10.1080/000164800454657.
Multiplanar reconstruction (MPR) images along the facial nerve canal were prepared with high-resolution computed tomography (HRCT) and their clinical usefulness was evaluated. Over a period of 6 years, temporal bone HRCT was performed on 628 cases. Of these cases, 6 patients exhibited facial nerve lesions, including facial nerve schwannoma (n = 3), traumatic facial nerve palsy (n = 2) and congenital facial nerve palsy (n = 1). Thirty patients without facial nerve lesions, such as chronic otitis media, were randomly selected as controls. Two types of MPR image were composed. One was along the labyrinthine and tympanic segment, and the other was along the tympanic and mastoid segment. Other MPR images, such as those along the facial nerve canal and bone fracture line, were composed as needed. All MPR images were prepared with real-time observation of delicate angles. In all cases, MPR images delineated the labyrinthine and tympanic segment in one image, and the tympanic and mastoid segment in another image. In two patients with traumatic facial nerve palsy, the MPR images revealed a relationship between the facial nerve canal and the bone fracture. In conclusion, MPR images of the facial nerve canal are easy to obtain and are useful in detecting facial nerve schwannoma, traumatic facial nerve palsy and congenital facial nerve palsy.
利用高分辨率计算机断层扫描（HRCT）制备面神经管的多平面重建（MPR）图像，并评估其临床实用性。在6年的时间里，对628例患者进行了颞骨HRCT检查。其中，6例患者出现面神经病变，包括面神经鞘瘤（n = 3）、创伤性面神经麻痹（n = 2）和先天性面神经麻痹（n = 1）。随机选择30例无面神经病变的患者，如慢性中耳炎患者作为对照。组成了两种类型的MPR图像。一种是沿迷路和鼓室段，另一种是沿鼓室和乳突段。其他MPR图像，如沿面神经管和骨折线的图像，根据需要组成。所有MPR图像均在实时观察精细角度的情况下制备。在所有病例中，MPR图像在一张图像中描绘出迷路和鼓室段，在另一张图像中描绘出鼓室和乳突段。在2例创伤性面神经麻痹患者中，MPR图像显示了面神经管与骨折之间的关系。总之，面神经管的MPR图像易于获得，对检测面神经鞘瘤、创伤性面神经麻痹和先天性面神经麻痹有用。
