%0 Journal Article %T Exact Weighted-FBP Algorithm for Three-Orthogonal-Circular Scanning Reconstruction %A Hongli Hu %A Jianzhou Zhang %J Sensors %D 2009 %I MDPI AG %R 10.3390/s90604606 %X Recently, 3D image fusion reconstruction using a FDK algorithm along threeorthogonal circular isocentric orbits has been proposed. On the other hand, we know that 3D image reconstruction based on three-orthogonal circular isocentric orbits is sufficient in the sense of Tuy data sufficiency condition. Therefore the datum obtained from three-orthogonal circular isocentric orbits can derive an exact reconstruction algorithm. In this paper, an exact weighted-FBP algorithm with three-orthogonal circular isocentric orbits is derived by means of Katsevich¡¯s equations of filtering lines based on a circle trajectory and a modified weighted form of Tuy¡¯s reconstruction scheme. %K cone-beam reconstruction %K three-orthogonal scanning %K filtering lines %K weighting function %U http://www.mdpi.com/1424-8220/9/6/4606