数字乳腺X射线摄影成像参数优化研究  

Study on Optimization of Exposure Parameter of Digital Mammography

作　　者：胡安康 邱睿[1,2] 王文静[1,3] 段文思 武祯 李春艳[1,4] 李君利 康天良[5] 牛延涛 冯泽臣[6] HU Ankang;QIU Rui;WANG Wenjing;DUAN Wensi;WU Zhen;LI Chunyan;LI Junli;KANG Tianliang;NIU Yantao;FENG Zechen(Department of Engineering Physics,Tsinghua University,Beijing 100084,China;Key Laboratory of Particle and Radiation Imaging of Ministry of Education,Beijing 100084,China;China Nuclear Energy Industry Corporation,Beijing 100032,China;Nuctech Company Limited,Beijing 100084,China;Beijing Tongren Hospital Affiliated to Capital University of Medical Sciences,Beijing 100730,China;Beijing Center for Diseases Prevention and Control,Beijing 100013,China)

机构地区：[1]清华大学工程物理系,北京100084 [2]粒子技术与辐射成像教育部重点实验室,北京100084 [3]中国原子能工业有限公司,北京100032 [4]同方威视技术股份有限公司,北京100084 [5]首都医科大学附属北京同仁医院,北京100730 [6]北京市疾病预防控制中心,北京100013

出　　处：《原子能科学技术》2021年第6期961-967,共7页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(11875036)。

摘　　要：为使女性受检者接受尽量低的剂量同时获得尽量好的图像质量,本文针对Hologic Lorad Selenia数字乳腺X射线机型进行了数字乳腺X射线摄影成像参数优化研究。采用不同靶/滤过组合、管电压,对不同厚度和腺体百分含量的乳腺模体成像,获得不同成像参数下图像的对比度噪声比,用于表征图像质量。采用适用于中国女性的平均腺体剂量转换因子,计算数字乳腺X射线摄影中受检者的受照剂量,进而探究图像质量一致的情况下,受检者的受照剂量随不同成像参数的变化规律,最终对适用于中国女性的数字乳腺X射线摄影成像参数给出建议。本文结果为中国女性数字乳腺X射线摄影成像参数的优化提供参考。In order to get the best image quality and make the female patient receive the minimum dose,the optimization of the exposure parameter in digital mammography was studied for Hologic Lorad Selenia digital mammography device.The breast phantom with different thicknesses and glandular contents were exposed by different tube voltages and target/filter combinations to get the images.These images were processed to calculate the contrast noise ratio(CNR),which was used to characterize the image quality.The mean glandular dose(MGD)to the patient undergoing digital mammography was estimated with MGD conversion coefficient suitable for Chinese women.The relationship between the MGD and exposure parameter under the condition of similar image quality was studied to find out the suggested exposure parameter in digital mammography suitable for Chinese women.The results of this study provide reference for optimizing exposure parameter of digital mammography.

关 键 词：数字乳腺X射线摄影 对比度噪声比 平均腺体剂量 品质因数 

分 类 号：R814[医药卫生—影像医学与核医学]