CT空间分辨率自动检测的研究与实践  

Practice and Study on Automatic Measurement of CT Spatial Resolution

作　　者：占杰[1] 余晓锷[1] 

机构地区：[1]南方医科大学生物医学工程系仪器教研室,广东广州510515

出　　处：《CT理论与应用研究（中英文）》2006年第2期43-46,共4页Computerized Tomography Theory and Applications

摘　　要：目的利用MTF方法实现CT空间分辨率的自动测量。方法阐述了自动测量原理,采用Catphan体模和自制体模对CT空间分辨力进行了测量。结果主观法和客观法测试结果相近。结论可以用自制体模对CT的空间分辨率进行自动测量。Objective To measure spatial resolution with MTFmethod. Method The Catphan_phantom and serf-prepared experimental phantom were used to measure spatial resolution based on the analyzing of measurement principle. Result the results of subject method was basically consistent with that of the object method. Conclusion it is feasible to do the automatic measurement for CT using selfprepared experimental phantom.

关 键 词：CT 空间分辨率 调制传递函数 线扩散函数 边缘扩散函数 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]