低剂量口腔CT 成像系统关键技术与成像方法研究

口腔 CT(Dental CT)是专门针对人体颌面部进行 X 射线成像的设备，其在颌骨内阻生牙的术前评估、口腔种 植、颞下颌关节病、颌骨囊肿及肿瘤、牙髓病与根尖周病及口腔正畸学等方面具有重要应用。目前，国外已经研发出 一些口腔 CT 产品，但价格昂贵，功能和技术指标也存在诸多不足。而我们自主研制的口腔 CT 系统具有无损、分辨率 高、影像无重叠、无畸变、剂量低等优点。凭借着分辨率高、影像无畸变的数字化成像优势，该系统可广泛应用于口腔 种植、齿科外科、牙体牙髓科、牙周疾病等方面的医学诊断。

Development of a Low-dose Dental CT System

Dental CT as a dedicated CT of human maxillofacial is widely used in clinical procedures including preoperative evaluation of impacted teeth in bone, dental implants, diagnosis of temporomandibular joint disease, jaw cysts and tumors, orthodontics, and teeth marrow disease, etc. Although there are some Dental CT machines abroad, they are expensive and there are some shortcomings in their functions and technical indexes. Dental CT has the following advantages: as no destruction, high resolution, no image overlapping, no image distortion and low dose. By virtue of high resolution and no image distortion, this CT system can be widely applied in a number of dental treatments such as filling, tooth-planting, periodontal disease, dental surgery etc.