摘要
目的:运用Matlab平台,通过图像处理实现X射线计算机断层成像(CT)值线性与对比度标度的自动测量,并将其自动测量结果与常规测量结果进行对比。方法:通过扫描美国体模实验室Catphan500型体模获取图像,借助Matlab平台编程确定各目标物质和感兴趣区域的位置后计算其均值和标准差,处理数据得到结果后与常规测量结果进行相关性分析。结果:基于统计学原理,自动测量结果与常规测量结果具有很强的一致性,且自动测量耗时少,能够极大降低人为干预。结论:基于Matlab实现CT值线性与对比度标度自动测量方法符合CT值线性与对比度标度的定义,且客观程度高,可应用于CT应用质量检测中,提高检测效率,为大型医疗设备应用质量检测提供可靠和稳定的数据。
Objective： To achieve automatic measurement of CT value linearity and contrast scale through image processing based on Matlab platform, and compare the results of automatic measurement and results of routine measurement. Methods： Through scanned phantom of Catphan 500 of phantom laboratory of United States to obtain image. And Malab platform was used to determine the position of each target substance and interesting area, and then to calculate their mean and standard deviation. At last, a correlation analysis about the results of processed data and conventional measuring results was implemented. Results： Based on the statistical principle, there was a obviously consistency between automatic measuring results and conventional measuring results. And automatic measurement spent less time and could vastly reduce artificial intervention. Conclusion： The achieved automatic measuring method, that bases on Matlab, about CT value linearity and contrast scale conforms to the definition of CT value and contrast scale. And it＇s objective degree is higher, and it can be used in detection of applied quality of CT to enhance detection efficiency and provide reliable and stable data for detection of applied quality of large medical equipment.
作者
孟奥
赵庆军
徐桓
毛岩
MENG Ao;ZHAO Qing-jun;XU Huan(College of Biomedical Engineering,Air Force Military Medical University,Xi＇an 710032;Examination Department of Radiation Instrument,Institute for Inspection of Drug and Instrument,Sanitary Bureau of Logistics Support Department,Central Military Commission,Beijing 100071,China)
出处
《中国医学装备》
2018年第10期15-17,共3页
China Medical Equipment
基金
军事医学计量科研专项(2011-JL3-016)“军队大型医疗设备远程监督管理系统研究”
作者简介
孟奥,女,（1992-）,硕士研究生,高级工程师,从事大型医疗设备应用质量检测研究工作.;通信作者：yjszqj@sina.com
