Title :
Cone-beam reconstruction for Micro-CT
Author :
Ge Wang ; Jiang, Ming ; Lee, Seung Wook ; Liu, Hong ; Hoffman, Eric
Author_Institution :
Dept. of Radiol., Iowa Univ., Iowa City, IA, USA
Abstract :
X-ray micro-CT has been a focus in the CT/Micro-CT Lab, the University of Iowa. In this paper, some recent progress we made on cone-beam micro-CT is described. First, we address approximation reconstruction using Feldkamp-type algorithms with multiple X-ray sources and displaced detector configurations. Then, we explain three types of artifacts associated with exact reconstruction in the Grangeat framework. Finally, we report the convergence of a generalized block-iterative Landweber scheme. Representative images from simulation and experiments are also given.
Keywords :
computerised tomography; convergence of numerical methods; image reconstruction; iterative methods; medical image processing; Feldkamp-type algorithms; Grangeat framework; X-ray micro-CT; approximation reconstruction; artifacts; cone-beam reconstruction; convergence; displaced detector configurations; exact reconstruction; experiments; generalized block-iterative Landweber scheme; multiple X-ray sources; representative images; simulation; Data acquisition; Image reconstruction; Image resolution; Lungs; Mice; Optical imaging; Sensor arrays; X-ray detection; X-ray detectors; X-ray imaging;
Conference_Titel :
Biomedical Imaging, 2002. Proceedings. 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7584-X
DOI :
10.1109/ISBI.2002.1029274
