Title :
Image reconstruction from few views by non-convex optimization
Author :
Sidky, Emil Y. ; Chartrand, Rick ; Pan, Xiaochuan
Author_Institution :
Univ. of Chicago, Chicago
fDate :
Oct. 26 2007-Nov. 3 2007
Abstract :
Image reconstruction for fan-beam computed tomography (CT) from projection data containing a small number of views is investigated. An iterative algorithm is developed that seeks to minimize the total p-variation of the reconstructed image subject to the constraint that the estimated projection data agree with the available data to within a specified data tolerance e. A preliminary investigation on the dependence of image quality as a function of p and e is performed.
Keywords :
computerised tomography; image reconstruction; iterative methods; medical image processing; optimisation; fan-beam computed tomography; image quality; image reconstruction; iterative algorithm; nonconvex optimization; Biomedical imaging; Computed tomography; Image quality; Image reconstruction; Iterative algorithms; Linear systems; Minimization methods; Nuclear and plasma sciences; Pixel; TV;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2007.4436889
