@ARTICLE{zhangoconnor:06:fbf,
 author = {Y. Zhang-O'Connor and J. A. Fessler},
 title = {Fourier-based forward and back-projectors in iterative fan-beam tomographic image reconstruction},
 journal = {{IEEE Trans. Med. Imag.}},
 volume = 25,
 number = 5,
 pages = {{582--9}},
 month = may,
 pm = 16689262,
 errata = {The claim that the method generalizes to helical CT is over-stated.
In principle it could be generalized, but how to make it efficient is unclear.
},
 doi = {10.1109/TMI.2006.872139},
 year = 2006
}

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