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Algebraic reconstruction in CT from limited views

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1 Author(s)
Andersen, A.H. ; Dept. of Electr. Eng., Kentucky Univ., Lexington, KY, USA

The author presents an algebraic reconstruction technique (ART) as a viable alternative in computerized tomography (CT) from limited views. Recently, algorithms of iterative reconstruction-reprojection (IRR) based on the method of convolution-backprojection have been proposed for application in limited-view CT. Reprojection was used in an iterative fashion alternating with backprojection as a means of estimating projection values within the sector of missing views. In algebraic methods of reconstruction for CT, only those projections corresponding to known data are required. Reprojection along missing views would merely serve to introduce redundant equations. Computer simulation studies are presented which demonstrate significantly improved reconstructed images achieved by an ART algorithm as compared to IRR methods

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Medical Imaging, IEEE Transactions on  (Volume:8 ,  Issue: 1 )