Basic research on a 3D CT system using a CCD sensor for Oral Maxillofacial region

使用CCD传感器的口腔颌面部3D CT系统的基础研究

• 批准号: 12470398
• 负责人: KANDA Shigenobu
• 金额: $ 8.77万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12470398/
• 关键词: CCD sensor; CT

To investigate problems for developing a 3D CT system using a pinhole CCD sensor, 1) a simulation p program, 2) a reconstruction program, 3) a control system for four stepping motor and 4) a CCD control system were developed. By using the simulation program (1), numerical 2D projection data were obtained. The reconstruction images for the data were calculated by using the reconstruction program (2). These results made it possible to evaluate the propriety of the simulation program and the reconstruction program. The control system for four stepping motor (3) made it possible to control up to 4-axis moving. By developing the CCD control system, we could obtain direct projection images. Using all these developed programs and systems, tomographic images, the center of which was above the images obtained by a CCD sensor, could be obtained without problems. However, there is a problem to be left. The insufficient of the x-ray photons made it difficult to obtain the projection using a pinhole CCD sensor. We have to improve this problem in the future.

为了研究开发使用针孔 CCD 传感器的 3D CT 系统的问题，开发了 1）模拟程序、2）重建程序、3）四个步进电机的控制系统和 4）CCD 控制系统。通过使用模拟程序（1），获得了数值二维投影数据。使用重建程序（2）计算数据的重建图像。这些结果使得评估模拟程序和重建程序的适当性成为可能。四个步进电机 (3) 的控制系统可以控制最多 4 轴移动。通过开发CCD控制系统，可以获得直接投影图像。使用所有这些开发的程序和系统，可以毫无问题地获得中心位于 CCD 传感器获得的图像上方的断层扫描图像。然而，还有一个问题需要解决。 X射线光子的不足使得使用针孔CCD传感器难以获得投影。我们以后要改进这个问题。