三维CT成像的数学模型

基金项目:

国家自然科学基金项目编号:30400577

总后勤部军队医药卫生科研基金(项目编号:01Q072)的资助

详细信息

Modeling of three-dimensional CT imaging

School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515

摘要: 三维CT成像广泛应用于放疗模拟定位等临床实践。当扫描运动物体时三维图像存在的位移和形变,与扫描参数设置和被扫描物体的运动状态等关系密切。本文通过理论分析CT扫描过程,建立三维成像的数学模型,计算三维图像的时间分辨率、位移和形变等指标,并分析其变化规律,为将来进一步的实验研究奠定基础。
- CT /
- 三维成像 /
- 数学模型
Abstract: Three-dimensional CT imaging(3D-CT)is broadly applied in such clinical applications as radiotherapy simulation.The displacement and distortion of 3D-CT for moving objects lie on its moving state and the scanning parameters.A mathematical model was set up based on theoretical analysis of CT scanning process.Thus the temporal resolution,displacement and distortion of theoretical 3D image can be deduced,which establish a strong foundation for future experiment study.
- computed tomography(CT) /
- three-dimensional imaging /
- modeling