南方医科大学学报2017，Vol.37Issue(3)：323-329,7.DOI:10.3969/j.issn.1673-4254.2017.03.08
投影数据校正对数字乳腺层析成像质量的影响
Influence of projection data correction on digital breast tomosynthesis imaging
摘要
Abstract
Objective To investigate the effect of detector performance during digital breast tomography (DBT) projection data acquisition on reconstructed image quality.Methods With reference to the traditional detector data correction method and the specific data acquisition pattern in DBT imaging,we utilized dark field correction,light field and its gain correction for processing the projection data collected by the detector.The reconstructed images were evaluated using iterative reconstruction method based on total generalized variation (TGV).Results In physical breast phantom experiment,the proposed method resulted in a reduced Heel effect caused by nonuniform photon number.The reconstructed DBT images after correction showed obviously improved image quality especially in the details with a low contrast.Conclusion The dark field correction,light field and its gain correction process for DBT image reconstruction can improve the image quality.关键词
数字乳腺层析成像/投影数据校正/PWLS-TGV算法Key words
digital breast tomosynthesis/projection data correction/PWLS-TGV algorithm引用本文复制引用
张忻宇,张华,边兆英,曾栋,何基,田秀梅,马建华,黄静..投影数据校正对数字乳腺层析成像质量的影响[J].南方医科大学学报,2017,37(3):323-329,7.基金项目
国家自然科学基金(81371544,61571214) （81371544,61571214）
广东省应用型研发专项(2015B020233008) （2015B020233008）
广州市科技计划项目(201510010039) （201510010039）
南方医科大学科研启动计划(CX2015N002)Supported by National Natural Science Foundation of China (81371544,61571214). （CX2015N002）
