| 重叠重建对螺旋CT纵向分辨力的影响分析 |
| |
| 引用本文： | 余晓锷,康立丽,洪德明,杨俊杰. 重叠重建对螺旋CT纵向分辨力的影响分析[J]. 中国医学物理学杂志, 2001, 18(2): 86-87 |
| |
| 作者姓名： | 余晓锷 康立丽 洪德明 杨俊杰 |
| |
| 作者单位： | 第一军医大学生物医学工程系, |
| |
| 摘 要： | 针对螺旋CT中纵向分辨力有所下降这一现象，提出了通过重叠重建来改善螺旋CT图像的纵向分辨力，从螺旋CT的层灵敏度剖面线（SSP）为高斯曲线为出发点，采用SSP的标准偏差来表示纵向分辨力（层厚），并以此为依据推导了重叠重建的最优化的设置，实践证明，重叠重建可以提高螺旋CT的纵向分辨力。
|
| 关 键 词： | 纵向分辨力 层灵敏度剖面线 重叠重建 CT |
| 文章编号： | 1005-202(2001)02-0086-02 |
| 修稿时间： | 2000-03-02 |
The effect of overlapping slice reconstruction on the longitudinal resolution in helical CT imaging |
| |
| YU Xiao-e,KANG Li-li,HONG De-ming,YANG Jun-jie. The effect of overlapping slice reconstruction on the longitudinal resolution in helical CT imaging[J]. Chinese Journal of Medical Physics, 2001, 18(2): 86-87 |
| |
| Authors: | YU Xiao-e KANG Li-li HONG De-ming YANG Jun-jie |
| |
| Abstract: | To improve the longitudinal resolution by overlapping slice reconstruction.Assuming that the slice sensitivity profile(SSP)can be approximated as a Gaussian distribution and that the standard deviation of the SSP can be computed according to slice-thickness formula,and the optimal setting is made.It is proved that overlapping slice reconstruction can improve the longitudinal resolution in spiral CT imaging. |
| |
| Keywords: | longitudinal resolution slice sensitivity profile overlapping slice reconstruction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
