Title :
A Novel Gridding Algorithm Using NUFFT with Applications to Ultrasound Diffraction Tomography
Author :
Zhang, Dongwen ; Tao, Jinxu ; Zheng, Hairong
Author_Institution :
Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei
Abstract :
Ultrasound diffraction tomography based on Fourier scattering theorem of the lossless circumstance is studied. The relation between resolution and imaging quality is analyzed and a reconstruction algorithm in frequency domain is proposed to reduce storage and computation. Different from an iterative reconstruction method based on NUFFT, we put forward a novel algorithm of interpolation based NUFFT, which compute the equispaced results from the non-uniform samples of two nearest projection lines using linear angular interpolation. The simulation result indicates that the algorithm proposed in this paper is much better than filtered-backprojection algorithm. With the projection data increase, reconstruction will approximate to the optimal.
Keywords :
biomedical ultrasonics; computerised tomography; fast Fourier transforms; interpolation; iterative methods; medical signal processing; signal reconstruction; Fourier scattering theorem; gridding algorithm; iterative reconstruction algorithm; linear angular interpolation; nonuniform fast Fourier transform; ultrasound diffraction tomography; Diffraction; Image analysis; Image resolution; Image storage; Interpolation; Iterative algorithms; Reconstruction algorithms; Scattering; Tomography; Ultrasonic imaging;
Conference_Titel :
Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1747-6
Electronic_ISBN :
978-1-4244-1748-3
DOI :
10.1109/ICBBE.2008.951
