磁共振成像显示下牙槽神经几何的准确性

磁共振成像显示下牙槽神经几何的准确性 邓 伟1，黄代营2，陈松龄2，陈井鑫1，廖天安1 1海南省人民医院口腔颌面外科，海南省海口市 570001 2中山大学附属第一医院口腔颌面外科，广东省广州市 510080 Geometric accuracy of magnetic resonance imaging displaying the inferior alveolar nerve Deng Wei1, Huang Dai-ying2, Chen Song-ling2, Chen Jing-xin1, Liao Tian-an1 1Department of Oral and Maxillofacial Surgery, Hainan Provincial People’s Hospital, Haikou 570001, Hainan Province, China 2Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China 摘要 背景:MRI弥补了X射线及CT难以显示神经的软组织方面的不足，可 以清晰直接显示下牙槽神经。 目的:磁共振成像显示下牙槽神经的几何准确性。 方法:新鲜尸体头颅1个去除软组织附丽，MRI、CT扫描获得数据， 分别测量下颌两侧第2前磨牙与第1磨牙、第1磨牙与第2磨牙、第2磨 牙与第3磨牙之间3个部位下牙槽神经与骨皮质之间距离，利用电锯切开 两侧同样位置下颌骨体部，游标卡尺测量神经与骨皮质之间距离，将MRI、 CT、游标卡尺测量3种方法所测得的数据进行t检验。 结果与结论:通过3种方法测量18个点骨皮质距离，下牙槽神经距 离平均值分别为 (4.894?1.692)，(4.906?1.715)，(4.861?1.718) mm，三者间两两比较 差异均无显著性意义(P > 0.05)。提示MRI显示下牙槽神经具有良好的几 何准确性，为进一步应用于种植等术前影像学检查提供依据。 中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞; 细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程 链接: 关键词 : 组织构建; 组织工程; 磁共振成像; 下牙槽神经; 种 植; 测量; 准确性; 国家自然科学基金; Abstract: BACKGROUND: MRI makes up for a deficiency of X-ray and CT images in nerve imaging and can display inferior alveolar nerve clearly and directly. OBJECTIVE: To assess the geometric accuracy of MRI displaying the inferior alveolar nerve. METHODS: One fresh human cadaver head was scanned by MRI and CT after removing the soft tissue. The distances were measured between the second premolar and the first molar, the first molar and the second molar, the second molar and the third molar. After cutting the bilateral mandible on the same sites with a saw, the distances between inferior alveolar nerve and cortex were