Materials and Methods:20 patients with 25 un-erupted and impacted teeth were scanned by Spiral CT and processed by dental reconstruction with SIEMENS spiral CT scanner.
材料和方法：用Siemens螺旋CT扫描机，对20例共25颗上颌埋伏阻生前牙患者进行螺旋CT横断面扫描，并进行曲面、三维重建。
The medical model - oriented ct modeller system can directly interface not only with a ct scanner but with RP or CAD systems, and a medical model can rapidly and accurately be manufactured via it.
面向医学模型的CT模型软件系统不仅能与CT扫描机直接接口，而且能与快速原型机和CAD系统直接接口，并能快速、准确地加工出医学模型。
We wish this article can help the engineers in hospital for understanding X-ray generation system in X-ray CT scanner, and give some aids in treating common breakdown in X-ray CT system.
加深医院中x线CT维修与维护人员对于X线CT中X线发生系统的全面理解，对X线CT的日常维修与维护提供一些帮助。
We wish this article can help the engineers in hospital for understanding X-ray generation system in X-ray CT scanner, and give some aids in treating common breakdown in X-ray CT system.
加深医院中x线CT维修与维护人员对于X线CT中X线发生系统的全面理解，对X线CT的日常维修与维护提供一些帮助。
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