CT图像重建方法在半影成像中的应用
Application of Computer Tomography Image Reconstruction Method in Penumbral Imaging
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摘要: CT图像重建方法和半影成像是两种传统的辐射图像诊断方式。将CT图像重建方法应用到半影图像数据处理中，探索出一种新的半影图像处理方法。在新的半影编码孔图像数据处理中，首次应用了与图像诊断系统点扩散函数无关的编码孔图像处理方法，解决了传统编码孔图像处理中由于图像诊断系统点扩散函数不确定带来的技术难题。在理论研究的基础上进行了半影模拟成像及图像重建，获得了理想的研究结果。Abstract: The CT (computer tomography) image reconstruction and penumbral imaging were conventional radiation image diagnostic methods. A novel penumbra image analyzing method, in which CT image reconstruction method was applied. A coded-aperture image analyzing method with no consideration of the system point spread function (PSF) was firstly presented, and technical difficulties in conventional code-aperture image analyzing due to uncertainty of the diagnostic system PSF were thus resolved. Based on the theoretical results, penumbra imaging and image reconstruction of a simple example are processed, and satisfactory results are achieved.
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Keywords:
- computer tomography ,
- image reconstruction ,
- penumbra image ,
- coded-aperture
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