Dual energy imaging inspection system using dual layer flat panel detector

Chong-zhou LAN; Zong-peng WANG; Min-ru WEN

doi:10.37188/OPE.XXXXXXXX.0001

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Dual energy imaging inspection system using dual layer flat panel detector

更新时间：2022-01-20

- Dual energy imaging inspection system using dual layer flat panel detector
- Optics and Precision Engineering Pages: 1-8(2022)
- 作者机构：
  
  1.深圳市安健科技股份有限公司，广东深圳 518000
  2.广东工业大学物理与光电工程学院，广东广州 510006
- 作者简介：
- 基金信息：
- DOI：10.37188/OPE.XXXXXXXX.0001
  CLC： TH774;TP751.1
- 稿件说明：
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蓝重洲,王宗朋,文敏儒.双层平板探测的双能成像检测系统[J].光学精密工程,

LAN Chong-zhou,WANG Zong-peng,WEN Min-ru.Dual energy imaging inspection system using dual layer flat panel detector[J].Optics and Precision Engineering,
蓝重洲,王宗朋,文敏儒.双层平板探测的双能成像检测系统[J].光学精密工程, DOI：10.37188/OPE.XXXXXXXX.0001

LAN Chong-zhou,WANG Zong-peng,WEN Min-ru.Dual energy imaging inspection system using dual layer flat panel detector[J].Optics and Precision Engineering, DOI：10.37188/OPE.XXXXXXXX.0001

摘要

提出一种使用双层X射线平板探测器单次曝光获取双能图像，并实现双能减影的检测方法. 介绍单层平板探测器成像方案，进一步提出双层平板探测的双能成像原理及系统. 仿真分析不同kVp，相同kVp在不同滤过下的X射线能谱，并通过试验分别探究kVp切换，双层平板方案胸部体模双能成像特性. 发现双层平板采集的双能图像可表征人体不同部位对不同能谱射线的衰减差异，且双能平板方案较kVp切换存在无运动伪影，剂量较低的优势. 提出一种适用于双层平板的双能图像配准方案，配准后的低、高能图像经双能减影后得到骨骼增强、骨骼抑制图像. 试验结果表明双层平板获取的双能减影图像可提升医生诊断所需视觉效果，减影图像对比度优于kVp切换方案.

Abstract

This paper proposes a novel dual energy （DE） subtraction based inspection method which uses dual layer X-ray flat panel detector （FPD） to acquire dual energy images via single exposure. Single layer FPD imaging method is introduced， dual layer FPD based dual energy imaging mechanism and system is detailed as well. Different kVp， same kVp with different filters induced X-ray spectrum is analyzed， and dual energy image characteristics of chest phantom are research by performing kVp switching， dual layer FPD imaging tests. The results show that dual energy images captured by dual layer FPD represent attenuation difference of different body part related to different x-ray spectrum， and dual layer FPD method need lower dose compare to kVp switching without move artifact. Finally dual energy image registration method for dual energy FPD is proposed， bone enhanced and bone suppressed images are acquired by performing dual energy subtraction after registration. Experiment results show dual energy subtraction images using dual layer flat panel detector can improve visualization that doctor diagnosis needed， and the subtracted images present better contrast than kVp switching method does.

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