电子束CT三维重建技术与颅颌面外科

目的 探讨电子束CT三维重建技术在颅颌面外科的适应症和应用价值。方法 采用美国Imatron公司的电子束CT(electron beam CT，以下简称EBCT)C-150，对76例严重颅颌面病人实行薄层CT容积扫描。将所获CT图象经数字接口传至加拿大ISG公司生产的Allegro工作站进行三维重建。结果EBCT成像技术能立体的、详尽和精确的显示机体组织三维解剖结构极其相互关系。其再现畸形或病体模型的程度可以达到近乎解剖学的精度，为准确了解和掌握病情并制定合理的手术治疗计划提供了极为重要的依据，提高了手术治疗效果。结论EBCT三维重建技术是现代颅颌面外科最主要的诊断方法之一并具有重要的临床应用价值。

Three-dimensional Electron BeamCT Reconstruction Image and Cranio-Maxiilo-Facial Surgery

Successful execution of a surgical treatment necessitates knowledge of the relevant anatomy, physiology, and pathology, as well as the technical specifics of the operation. At this time, the Cranio-maxillo-facial three-dimensional reconstruction can display bone change and relationship with adjacent structure, which is very useful for clinical assistance examination and more favorable and more accurate for establishing surgical operation planning. Since 1996, 76 patients have undergone this technique at the Service of Plastic and Cranio-maxillo-facial surgery in Beijing. We adapted our clinical results to four main indications: I.Congenitally cranio-maxillo-facial deformity; 2. Cranio-maxillo-facial trauma or post-traumatic reconstructive Surgery; 3. Cranio-maxillo-facial tumors surgery and 4. Cranio-maxillo-facial esthetic surgery. The indication of using the three-dimensional electron beam CT reconstruction technique in Cranio-maxillo-facial surgery with these managements is discussed and some cases of clinic are demonstrated.