An Accurate Diffraction Ultrasound Tomography Images Reconstruction Algorithm Based on LS_NUFFT

作者：Fang Jie^*; Yu Ping; Weng Zhiyuan; Kong Min

来源：1st International Conference on Information Science and Electronic Technology (ISET), 2015-03-21 to 2015-03-22.

• diffraction tomography
• Fourier diffraction projection theory
• LS_NUFFT
• GFFT

According to the Fourier diffraction projection theory, the Fourier transform of projection data from multi-band frequency ultrasonic is distributed over complex plane in form of different radius arcs. The classical filtered back projection (FBP) algorithm isn't fit for distributing of the k space data, and the conventional gridding data interpolation on non-Cartesian data would produce much artifact. The least squares nonuniform fast Fourier transform(LS_NUFFT) is brought forth by Liu and Nguyen and applied in MRI image reconstruction. The LS_NUFFT is apply successfully in diffraction ultrasound tomography image reconstruction for the first time and the best kernel matrix size is proved by experiment. The reconstruction experiments based on LS_NUFFT, Min-max NUFFT and GFFT algorithms are done respectively, the reconstruction quality of LS_NUFFT is much better than Min-max method and GFFT method.

• 出版日期2015
• 单位皖西学院