摘要
CT检测非刚性物体目标时,会因多角度扫描的异步性而使得重建图像分辨率降低.本文利用超声实时同步观测技术,设计了一种基于超声同步观测辅助技术的CT成像系统,使得通过该成像系统能获取同一个标定系统下的CT重建图像和超声图像.同时基于此系统提出了一个区域特征加权的图像融合方案,从而达到丰富重建图像信息量和提高信息准确率的目的.
When computed tomography(CT)detects a non-rigid object target,the resolution ratio of an reconstructed image will be reduced due to the asynchronous nature of multi-angle scans.In this study,a real-time simultaneously ultrasonic observation technique is employed to design a CT imaging system based on synchronously ultrasonic observation aid technology,which enables CT reconstructed images and ultrasound images under the same calibration system to be obtained.Meanwhile,grounded in this system,a region feature weighted image fusion scheme is proposed,so as to enrich the information of reconstructed image and improve the accuracy of the information.
作者
林森林
徐圣兵
方桂标
陈广诚
欧阳翼
LIN Senlin;XU Shengbing;FANG Guibiao;CHEN Guangcheng;OUYANG Yi(School of Applied Mathematics,Guangdong University of Technology,Guangzhou,Guangdong 510520,China;School of Mechanical Engineering,Guangdong University of Technology,Guangzhou,Guangdong 510006,China;Department of Radiotherapy,Cancer Center,Sun Yat-sen University,Guangzhou,Guangdong 510075,China)
出处
《数学建模及其应用》
2019年第1期14-22,83,共10页
Mathematical Modeling and Its Applications
关键词
异步扫描
非刚性物体
标定
CT成像
图像融合
asynchronous scanning
non-rigid objects
calibration
CT image
image fusion
