Title

Analysis Of An Exact Inversion Algorithm For Spiral Cone-Beam Ct

Abstract

In this paper we continue studying a theoretically exact filtered backprojection inversion formula for cone beam spiral CT proposed earlier by the author. Our results show that if the phantom f is constant along the axial direction, the formula is equivalent to the 2D Radon transform inversion. Also, the inversion formula remains exact as spiral pitch goes to zero and in the limit becomes again the 2D Radon transform inversion formula. Finally, we show that according to the formula the processed cone beam projections should be backprojected using both the inverse distance squared law and the inverse distance law.

Publication Date

8-7-2002

Publication Title

Physics in Medicine and Biology

Volume

47

Issue

15

Number of Pages

2583-2597

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1088/0031-9155/47/15/302

Socpus ID

0037036595 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0037036595

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