Title :
Three-dimensional computed tomography using cone-beam monochromatic X-rays
Author :
Kudo, Hiroyuki ; Saito, Tsuneo ; Takeda, Tohru
Author_Institution :
Inst. of Inf. Sci. & Electron., Tsukuba Univ., Ibaraki, Japan
Abstract :
We have developed a proto-type experimental system for 3-D X-ray cone-beam CT which is composed of a monochromatic X-ray source, a computer-controlled turn table for rotating and moving objects, a 9-inch image intensifier, and a workstation. The system is designed based on exact cone-beam reconstruction theories and acquires projection data by using non-planar scanning orbits. The system also possesses a function of element selective imaging which visualizes quantitative distribution of typical contrast agents such as I, Ba, and Gd by using the K-edge energy subtraction technique
Keywords :
computerised tomography; image intensifiers; image reconstruction; medical image processing; 3-D X-ray cone-beam CT; 9 in; 9-inch image intensifier; Ba; Gd; I; K-edge energy subtraction technique; computer-controlled turn table; cone-beam monochromatic X-rays; contrast agents; element selective imaging; exact cone-beam reconstruction; monochromatic X-ray source; nonplanar scanning orbits; projection data; three-dimensional computed tomography; workstation; Biomedical imaging; Computed tomography; Data acquisition; Image intensifiers; Image reconstruction; Optical imaging; Orbits; Reconstruction algorithms; Workstations; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-3534-1
DOI :
10.1109/NSSMIC.1996.587911
