| CT的空间分辨力测量技术及测试体模研究 |
| |
| 引用本文： | 李萍 余晓锷 杨克柽 占杰. CT的空间分辨力测量技术及测试体模研究[J]. 第一军医大学学报, 2005, 25(5): 545-546 |
| |
| 作者姓名： | 李萍 余晓锷 杨克柽 占杰 |
| |
| 作者单位： | 南方医科大学生物医学工程系,广东广州510515 |
| |
| 摘 要： | 目的 采用主观法和客观法测试CT机的空间分辨力，探讨与空间分辨力相关的各项参数。方法 采用Catphan500和自制体模对2台CT在不同条件下进行了测试。结果 分别得出了线对法和MTF方法下的结果。结论 每种测试方法各有优缺点，有多种因素影响CT空间分辨力。
|
| 关 键 词： | 空间分辨力 体模 调制传输函数 主观法 |
High-contrast resolution measurement of CT and phantom testing] |
| |
| Ping Li,Xiao-e Yu,Ke-cheng Yang,Ji Zhan. High-contrast resolution measurement of CT and phantom testing][J]. Journal of First Military Medical University, 2005, 25(5): 545-546 |
| |
| Authors: | Ping Li Xiao-e Yu Ke-cheng Yang Ji Zhan |
| |
| Affiliation: | Department of Biomedical EngineeringìSouthern Medical University, Guangzhou 510515, China. |
| |
| Abstract: | OBJECTIVE: The authors adopted subjective and objective methods for measuring high-contrast resolution (HCR) of CT and explored the parameters in relation to HCR. With Catphan500 and a self-prepared experimental phantom, the two CT sets were tested for HCR with varied slice thickness and kernels. The subjective assessment of the images was carried out by visual detection of HCR, and objective assessment was performed by calculations. Each of the methods has its advantages and limitations, and many factors may affect the HCR of CT. |
| |
| Keywords: | |
| 本文献已被 维普 等数据库收录！ |
|
