Local computed tomography via iterative deblurring.
Local computed tomography via iterative deblurring.
复制标题
通过迭代去模糊进行局部计算机断层扫描。
DOI：
10.1002/sca.4950180808
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Vannier,MW
中科院分区：
文献类型：
--
作者：
Wang,G;Snyder,DL;Vannier,MW
X 射线计算机断层扫描是一种主要的成像方式。迭代去模糊方法适用于平行光束和锥形光束几何形状的局部重建，仅利用穿过感兴趣区域的 X 射线。使用无噪声和噪声投影数据的数值模拟证明了其可行性。迭代去模糊方法具有保持非负性、单调收敛和最小化 Csiszàr'sI 散度的理论优势。
X‐ray computed tomography is a major imaging modality. An iterative deblurring method is adapted for local reconstruction in parallel‐beam and cone‐beam geometries, utilizing only x‐rays passing through a region of interest. The feasibility is demonstrated in numerical simulation with noise‐free and noisy projection data. The iterative deblurring method has the theoretical advantages of maintaining nonnegativity, converging monotonically and minimizing Csiszàr'sI‐divergence.