基于FPGA的心脏扫描自动管电流调制控制系统设计与分析  

Design and analysis of cardiac scans use dose of modulation control system based on FPGA

作　　者：朱炯 李康 徐亦飞 Zhu Jiong;Li Kang;Xu Yifei(Minfound Medical Co.,Ltd.,Shaoxing 312000,China)

机构地区：[1]明峰医疗系统股份有限公司,浙江绍兴312000

出　　处：《电子技术应用》2021年第12期31-34,38,共5页Application of Electronic Technique

摘　　要：心脏扫描图形重建是在心脏舒张期阶段有效,其余扫描时段不使用。因此可采用前瞻式扫描方法来进行扫描来降低辐射剂量,而由于扫面横切面的不同,可以使用自动管电流调制技术(Dose of Modulation,DOM)来进一步降低辐射剂量。自动管电流调制技术即根据被扫物体不同角度下横截面的衰减差异来实时调整管电流的大小,从而提高射线效率来降低辐射剂量。通过结合两者的特点,设计一种类前瞻式心脏扫描自动管电流调制控制系统,实现了心脏扫描辐射降低,图像质量良好的效果。When applying a cardiac scan,the image reconstruction only needs the expose data that sampled in the cardiac diastolic phase,and other periods sampled data are discarded.Therefore,the forward-looking scan pattern can be used in order to reduce the radiation dose.Due to the different cross sections of the scanning plane,the dose of modulation(DOM)can be used to reduce the radiation dose further.According to the attenuation difference of the cross section of the scanned object at different angles,the DOM adjusts the mA value based on the angles in real time,so the DOM can improve the xray efficiency and reduce the radiation dose.By combining the characteristics of the two,a forward-looking automatic tube current modulation control system for cardiac scanning is designed,which realizes the effect of reducing cardiac scanning radiation and getting good image quality.

关 键 词：FPGA 心脏扫描 DOM 

分 类 号：TN709[电子电信—电路与系统]