True three-dimensional cone-beam reconstruction (TTCR) algorithm

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 o...

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Veröffentlicht in:IEEE transactions on medical imaging Jg. 8; H. 4; S. 304 - 312
Hauptverfasser: Lee, S.Z., Ra, J.B., Hilal, S.K., Cho, Z.H.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States IEEE 01.12.1989
Schlagworte:
Computational efficiency
Detectors
Filters
Geometry
Image reconstruction
Image sampling
Iterative methods
Radiology
Spatial resolution
Volume measurement
ISSN:0278-0062
Online-Zugang:Volltext
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Zusammenfassung: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.< >
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ISSN:0278-0062
DOI:10.1109/42.41483