Title :
True three-dimensional cone-beam reconstruction (TTCR) algorithm
Author :
Lee, S.Z. ; Ra, J.B. ; Hilal, S.K. ; Cho, Z.H.
Author_Institution :
Dept. of Radiol., Columbia Univ., New York, NY, USA
fDate :
12/1/1989 12:00:00 AM
Abstract :
A true three-dimensional cone-beam reconstruction (TTCR) algorithm for direct volume image reconstruction from 2-D cone-beam projections is developed for the complete sphere geometry. The algorithm is derived from the parallel-beam true three-dimensional reconstruction (TTR) algorithm and is based on the modified filtered backprojection technique, which uses a set of 2-D space-invariant filters. The proposed algorithm proved to be superior in spatial resolution to the parallel-beam TTR algorithm and to offer better computational efficiency
Keywords :
computerised tomography; 2D space-invariant filters; complete sphere geometry; computational efficiency; computerised tomography; direct volume image reconstruction; medical diagnostic imaging; modified filtered backprojection technique; parallel-beam true 3D reconstruction algorithm; spatial resolution; true 3D cone-beam reconstruction algorithm; Computational efficiency; Detectors; Filters; Geometry; Image reconstruction; Image sampling; Iterative methods; Radiology; Spatial resolution; Volume measurement;
Journal_Title :
Medical Imaging, IEEE Transactions on
