基于新型光纤滤线栅的CT图像散射校正  

Scattering Correction of CT Images Based on Novel Fiber Optic Grids

作　　者：张兵强 马西响 任宏宇 王三昭 陈龙 李明 张月 刘启蒙 郑晗 石攀 Zhang Bingqiang;Ma Xixiang;Ren Hongyu;Wang Sanzhao;Chen Long;Li Ming;Zhang Yue;Liu Qimeng;Zheng Han;Shi Pan(CNBM Guangxin Technology Co.,Ltd.,Zaozhuang 277100,Shandong,China;Shenzhen Angell Technology Co.,Ltd.,Shenzhen 518000,Guangdong,China)

机构地区：[1]中建材光芯科技有限公司,山东枣庄277100 [2]深圳市安健科技股份有限公司,广东深圳518000

出　　处：《激光与光电子学进展》2024年第20期281-288,共8页Laser & Optoelectronics Progress

摘　　要：本文旨在深入探讨新型光纤滤线栅对成像质量的影响,并评估其在医学成像领域中的潜在应用价值。采用实验分析和综合评估的方法,系统研究了源相距、管电流乘时间、管电压,以及滤线栅阵列面积对光纤滤线栅在成像过程中的性能影响。通过测量一次辐射透过率、散射辐射透过率、总辐射透过率及图像质量,对光纤滤线栅的表现进行全面分析。结果显示,在60 kV、40 mAs,80 kV、40 mAs,120 kV、20 mAs的曝光条件下,80μm、100μm和120μm的光纤滤线栅均显示出良好的散射抑制效果,从而提高X射线成像的质量和清晰度。100μm的光纤滤线栅在平衡总辐射透过率和散射辐射透过率方面具有较好的性能,优于80μm和120μm的光纤滤线栅。实验结果表明,光纤滤线栅具备显著降低散射辐射、提升图像质量和对比度的巨大潜力。这为精准医疗领域的诊断与治疗提供了新的可能性。The aim of this study is to comprehensively explore the impact of novel fiber optic X-ray grids on imaging quality and to evaluate their potential applications in medical imaging.Using experimental analysis and comprehensive evaluation,we systematically investigated the effects of the source image distance,product of tube current and time,tube voltage,and filter grid array area on the performance of these fiber optic X-ray grids in the imaging process.Further,we comprehensively analyzed the performance of fiber optic X-ray grids by measuring the transmission of primary radiation,scattered radiation,and total radiation and image quality.Results show that under the exposure conditions of 60 kV,40 mAs;80 kV,40 mAs;and 120 kV,20 mAs,the 80-,100-,and 120-μm novel fiber optic X-ray grids show good scattering suppression effects,which improve the quality and clarity of X-ray imaging.Additionally,the 100-μm fiber optic X-ray grids exhibit better performance in balancing the transmissions of total radiation and scattered radiation compared with the 80-and 120-μm fiber optic X-ray grids.The experimental results indicate that fiber optic X-ray grids have great potential for considerably reducing scattered radiation and improving image quality and contrast.Thus,this study offers new possibilities for diagnosis and treatment in the field of precision medicine.

关 键 词：X射线成像 防散射滤线栅 X射线光学 光纤成像 医学和生物成像 

分 类 号：TH774[机械工程—仪器科学与技术] TN253[机械工程—精密仪器及机械]