首页|Real-Time 3D Ultrasound Imaging System Based on a Hybrid Reconstruction Algorithm
Real-Time 3D Ultrasound Imaging System Based on a Hybrid Reconstruction Algorithm
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As a safe and convenient imaging technology in clinical routine diagnosis,ultrasound imaging can pro-vide real-time 2D images of internal tissues and organs.To realize real-time 3D image reconstruction,pixel nearest neighbor interpolation(PNN)reconstruction algorithm and Bezier interpolation algorithm are combined into a hy-brid reconstruction algorithm.On this basis,a real-time interactive 3D ultrasound imaging system is developed.Through temporal calibration and spatial calibration,the six degrees of freedom poses of 2D ultrasound images can be accurately collected.The 3D volume reconstructed by the proposed 3D reconstruction algorithm is visualized by volume rendering.A multi-thread software system allows parallel operation of data acquisition,3D reconstruction,volume visualization and other functions.3D imaging experiments on a 3D printing femur model,a neck phantom and the neck of human volunteers were performed for systematic evaluation.When the reconstruction voxel size was set to be(0.53 mm3,1.03 mm3,1.53 mm3),the reconstruction errors of the femur and trachea model were respective-ly(0.23 mm,0.31 mm,0.56 mm)and(0.62 mm,0.88 mm,1.41 mm).Clinical feasibility was demonstrated by appli-cation of the 3D ultrasound imaging on the neck of human volunteers.
3D ultrasound imagingFree-hand reconstructionSpatial calibration
Yifei LYU、Yu SHEN、Mingbo ZHANG、Junchen WANG
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School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China
The First Medical Center,General Hospital of Chinese PLA,Beijing 100853,China
National Key R&D Program of ChinaNational Natural Science Foundation of China
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