Tomographic reconstruction of time-varying object from linear time-sequential sampled projections

Author

Chiu, Ying Ha ; Fong Yau, Sze

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong

Volume

v

fYear

1994

fDate

19-22 Apr 1994

Abstract

This paper considers the reconstruction of time-varying object by computer tomography. In practice, projections at different directions are measured in sequence. Thus, when the object is time-varying, the projections at different directions are obtained at different time and will not correspond to those of the same distribution. The reconstructed images will therefore have motion artifacts. A new image reconstruction method based on a priori knowledge of the projections is introduced to solve this problem. A novel iterative algorithm is developed and its validity is demonstrated by computer simulation results

Keywords

computerised tomography; image reconstruction; image sampling; iterative methods; medical image processing; tomography; computer simulation results; computer tomography; image reconstruction; iterative algorithm; linear time-sequential sampled projections; medical imaging; motion artifacts; projections; time-varying object; tomographic reconstruction; Biomedical imaging; Computed tomography; Computer simulation; Heart; Image reconstruction; Image sampling; Iterative algorithms; Lungs; Sampling methods; Signal sampling;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on

Conference_Location

Adelaide, SA

ISSN

1520-6149

Print_ISBN

0-7803-1775-0

Type

conf

DOI

10.1109/ICASSP.1994.389470

Filename

389470