作者：余晓锷1, 蔡凡伟1, 何兴华2, 欧阳习2
作者单位：1. 南方医科大学生物医学工程学院, 广东 广州 510515;
2. 广州军区广州总医院, 广东 广州 510010
关键词：PET/CT; 图像融合; 精度测试; 体模设计
摘要：
通过自主研制的体模,测试PET/CT图像融合精度,并验证体模的可行性和有效性。采集PET/CT融合图像数据,利用IDL和Matlab软件测量圆柱棒及试管在PET、CT图像中的坐标值,两坐标值的差值即为图像融合精度。自制体模通过模拟热区和冷区,可以准确、快速地测量PET/CT图像融合精度,该体模可对日常质量控制项目的体模进行测试。
Research on PET/CT alignment phantom and testing method
YU Xiao-e1, CAI Fan-wei1, HE Xing-hua2, OUYANG Xi2
1. Department of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China;
2. General Hospital of Guangzhou Military Region, Guangzhou 510010, China
Abstract: This article is proposed to design and develop a PET/CT alignment phantom which can measure the PET/CT image fusion accuracy and verity its feasibility and effectiveness. IDL and Matlab were used to calculate the errors of cylindrical rods and tubes in the PET and CT images.The phantom simulates the hot and the cold regions, and the image fusion accuracy could be measured accurately and quickly. The self-made phantom should provide the most reliable measurement of alignment error with the analysis, and it can also be used as a routine PET/CT performance quality control testing.
Keywords: PET/CT; image fusion; accuracy measurement; phantom design
2014, 40(3): 13-15,22 收稿日期: 2013-10-18;收到修改稿日期: 2013-12-26
基金项目: 广州市行业工程中心建设项目(穗科信条[2010]13-1);军事医学计量科研专项课题(2011-JL2-019)
作者简介: 余晓锷(1968-),女,湖北麻城市人,教授,博士,研究方向为大型医疗设备质量控制。
参考文献
[1] 王荣福. PET/CT-分子影像学新技术应用[M]. 北京:北京大学医学出版社,2011:4-17.
[2] 安晶刚,岳保荣. PET/CT图像融合精度测量方法与实现[J].中华放射医学与防护杂志,2011,31(2):218.
[3] 贺小红,黄克敏,李小华,等. PET/CT显像的图像融合精度测试研究[J]. 中国医学物理学杂志,2009,25(2):1087-1090.
[4] 秦襄培,郑贤中. Matlab图像处理宝典[M]. 北京:电子工业出版社,2011:341-359.
[5] Nakazato R, Dey D, Alexanderson E, at el. Automatic alignment of myocardial perfusion PET and 64-slice coronary CT angiography on hybrid PET/CT[J]. Journal of Nuclear Cardiology,2012,19(3):482-491.
[6] 杨星,贾峰涛,任庆余. PET/CT的技术发展趋势[J]. 中国医疗设备,2012,27(2):51-52,56.
[7] 欧阳习,尹吉林,李小华,等. NEMA NU2-2001标准在国内PET/CT性能测试的整体应用[J]. 中国医疗设备, 2009,24(8):28-32.
[8] National Electrical Manufactures Association. NEMA NU2-2007.Performance Measurements of Positron Emission Tomography[S].[s.n.]:NEMA Standards Publication,2007.
