分别从直接测试方法和间接测试方法两方面分析CT系统空间分辨率测试方法的研究进展,综述了两种方法的优缺点和国内外研究现状,介绍一种测试CT系统空间分辨率的新方法,并对该领域的研究和发展趋势作了简要的阐述和展望.最后,介绍一种测试空间分辨率的新方法:数字化标准试件和自动分析软件技术.
This paper represents the principle and recent approach of the subjective method and objective method,which were dedicated for the assessment of spatial resolution in CT system.The comparison between different methods was made and a new technique was introduced.Some problems in these methods were discussed and the research directions on this area were also pointed out.
参考文献
| [1] | GJB 5312-2004.GJB 5312-2004.工业射线层析成像(CT)检测[S].北京:国防科工委军标出版发行部,2004. |
| [2] | OPRAX MEDICAL .Line pair/resolution test phantom[EB/OL].http://www.opraxmedical.com/ Accessories/ Phantoms/Test/Linepair |
| [3] | The Phantom Laboratory Inc .Catphan manual[EB/OL].http://www.phantomlab.com/catphan.html,1997-07. |
| [4] | Z 4916-1997.Z 4916-1997.Test charts for resolution characteristics of X-ray equipment[S].Japan,1997. |
| [5] | QRM .3D spatial resolution phantom[EB/OL].http://www.qrm.de/content/pdf/QRM-3DSR.pdf |
| [6] | 曾祥照.图像分辨率测试卡的结构与标准[J].CT理论与应用研究,2005(03):29-34. |
| [7] | Hye Jung Park;Seung Eun Jung et al.The relationship between subjective and objective parameters in CT phantom image evaluation[J].Korean Journal of Radiology,2009,10(05):490-495. |
| [8] | Droege R T;Morin R L .A practical method to measure the MTF of CT scanners[J].Medical Physics,1982,9(05):758-760. |
| [9] | Kurt Rossmann;Ph D .Point spread-function,line spread-function,and modulation transfer function:tools for the study of imaging systems[J].Radiology,1969,93:257-272. |
| [10] | Zhang Wei;Wang Xueli;Zhuang Tiange .A new method to get more robust MTF curve[J].IEEE,2005,1(04):1743-1746. |
| [11] | 杨克柽,林意群.CT图像空间分辨力的实用检测方法[J].放射学实践,2006(03):303-305. |
| [12] | Boone JM .Determination of the presampled MTF in computed tomography.[J].Medical Physics,2001(3):356-360. |
| [13] | Nick Keat .Comparison of assessment techniques for CT scanner spatial resolution measurement[J].CTUG,2006,10(05) |
| [14] | Hiroshi Fujita;Du Yih Tsai .A simple method for determination the modulation transfer function in digital radiography[J].IEEE,1992,11(01):34-39. |
| [15] | Shinichi Wada;Masaki Ohkubo et al.A method of accuracy evaluation of line spread function(LSF)and point spread function(PSF)measured in computed tomography[J].Medical Imaging,2006,6142:31-38. |
| [16] | Mori I;Machida Y .Deriving the modulation transfer function of CT from extremely noisy edge profiles.[J].Radiological physics and technology,2009(1):22-32. |
| [17] | E 1695-1995.E 1695-1995.(Reapproved 2006).Standard Test Method for Measurement of CT System Performance[S].USA:ASTM,2000. |
| [18] | GJB 5311-2004.GJB 5311-2004.工业CT系统性能测试方法[S].北京:国防科工委军标出版发行部,2004. |
| [19] | Tarraf Torfeh;Stphane.Software tools dedicated for a automatic analysis of the CT scanners quality controls images[A].,2008 |
| [20] | Tarraf Torfeh;Stephane.Evaluation of two software tools dedicated for an automatic analysis of the CT scanner images spatial resolution[A].,2008 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%