Analysis of an exact inversion algorithm for spiral cone-beam CT
Abbreviated Journal Title
Phys. Med. Biol.
LONG-OBJECT PROBLEM; TOMOGRAPHY; RECONSTRUCTION; Engineering, Biomedical; Radiology, Nuclear Medicine & Medical Imaging
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.
Physics in Medicine and Biology
Article; Proceedings Paper
"Analysis of an exact inversion algorithm for spiral cone-beam CT" (2002). Faculty Bibliography 2000s. 3281.