电子计算机断层摄影(CT)具有分辨力高、图像清晰、对病人无损伤等优点,是目前医学影像学中一极有发展前途的诊断技术;在临床医学诊断课题中占有重要的位置。此新方法的诊断价值,国内、外神经外科、耳鼻喉科、眼科等临床学科已有许多报导,但CT在口腔颌面外科临床应用的介绍国外虽日益增多,迄今国内甚 Computed tomography (CT) has the advantages of high resolution, clear images and no damage to the patient. It is a very promising diagnostic technique in medical imaging. It occupies an important position in the clinical diagnosis. The diagnostic value of this new method, domestic and foreign neurosurgery, otolaryngology, ophthalmology and other clinical disciplines have been many reports, but the clinical application of oral and maxillofacial surgery in the introduction of an increasing number of foreign countries so far