设为首页 |  加入收藏
首页首页 期刊简介 消息通知 编委会 电子期刊 投稿须知 广告合作 联系我们
数字化乳腺成像系统量子探测效率检测方法研究

Investigation on Testing Method of Detective Quantum Efficiency for the Digital Mammographic System

作者: 梁健  项士海  孙智勇  宣杨  王建军  侯耀芳  王立新  康雁 
单位:东北大学中荷生物医学与信息工程学院,生物医学影像研究所(沈阳110819)
关键词: 数字乳腺机;量子探测效率;  边缘检测;调制传递函数;  噪声功率谱 
分类号:
出版年·卷·期(页码):2010·29·5(441-448)
摘要:

数字化乳腺X线摄影技术已成为临床检测早期无症状隐匿性乳腺癌的重要手段,在此背景下,评价数字乳腺机性能的量子探测效率(DQE)检测方法,是国内外临床医学界和医学影像检测部门所关注的重要课题。针对相对成熟的IEC 62220-1标准不适用于辐射剂量小、辐射野小的数字乳腺机DQE检测的问题,本文较深入地研究了基于IEC 62220-1-2 标准的数字乳腺机DQE检测方法和具体数字图像处理算法的实现。并将该DQE检测手段实施于辽宁省医疗器械检验所受检产品某公司生产的乳腺机,得到了相应的DQE测试结果,最后,本文讨论了数字化乳腺成像系统量子探测效率的重要影响因素。
 


Quantum detective efficiency (DQE) measurement methodology based on the international standard IEC 62220-1 is being regarded as an objective performance evaluation metric for the digital Xray graphic system. However, the fast becoming popular mammographic systems are not applied to the IEC 62220-1 standard because the factors affecting measurement are more complicated. In this paper, the DQE measurement methodology for digital mammographic system and the corresponding standard IEC 62220-1-2 was investigated. Further, this measurement method was used for testing the DQE of the digital mammographic system. The DQE value was obtained and the factors affecting measurement were discussed in detail.

参考文献:

[1]IEC 62220-1.Medical electrical equipment – Characteristics of digital Xray imaging devices – Part 1:Determination of the detective quantum efficiency.Geneva, Switzerland:International Electrotechnical Commission (IEC), 2003.
[2]IEC/CEI 62220-1-2.Part 1-2: Determination of the detective quantum efficiency –detectors used in mammography.First edition.2007.
[3]Park HS,Kim HJ,Cho HM,et al.Measurements and Evaluation of the Image Noise Power Spectrum for Computed Radiography.IEEE,2008,M06-459.
[4]Buhr E, GuntherKohfahl S, Neitzel U. Simple method for modulation transfer function determination of digital imaging detectors from edge images. Proceeding of SPIE, 2003,  5030:877-884.
[5]Zhang D,Rong J,Chu R,et al.DQE measurements in magnification Xray Imaging.Journal of XRay Science and Technology, 2006, 14: 141-150.
[6]Takamura M, Higaki A. Analysis of factors that affect DQE in digital mammography.Conference on Physic of Medical Imaging.Proceedings of SPIE, 2004,5745:1217-1228.
[7]白玫,彭明辰.X线CT成像质量评估中的调制传递函数的测试与分析. 医疗设备信息,2006, 21:12-13.

服务与反馈:
文章下载】【加入收藏
提示:您还未登录,请登录!点此登录
 
友情链接  
地址:北京安定门外安贞医院内北京生物医学工程编辑部
电话:010-64456508  传真:010-64456661
电子邮箱:llbl910219@126.com