Title :
Iterative reconstruction in diffraction tomography using nonuniform fast Fourier transform
Author :
Bronstein, Michael ; Bronstein, Alexander ; Zibulevsky, Michael
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
Abstract :
We show an iterative reconstruction framework for diffraction ultrasound tomography. The use of broadband illumination allows the number of projections to be reduced significantly compared to straight ray tomography. The proposed algorithm makes use of fast forward non-uniform Fourier transform (NUFFT) for iterative Fourier inversion. Incorporation of total variation regularization allows noise and Gibbs phenomena to be reduced whilst preserving the edges.
Keywords :
acoustic signal processing; biomedical ultrasonics; computerised tomography; fast Fourier transforms; image reconstruction; inverse problems; iterative methods; medical image processing; Gibbs phenomena; NUFFT; acoustic imaging; broadband illumination; diffracting sources; diffraction ultrasound tomography; fast forward nonuniform Fourier transform; iterative Fourier inversion; iterative reconstruction; noise; nonuniform fast Fourier transform; number of projections; straight ray tomography; total variation regularization; Acoustic diffraction; Acoustic noise; Acoustic scattering; Fast Fourier transforms; Fourier transforms; Frequency; Image reconstruction; Lighting; Tomography; Ultrasonic imaging;
Conference_Titel :
Biomedical Imaging, 2002. Proceedings. 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7584-X
DOI :
10.1109/ISBI.2002.1029337
