Three-dimensional monochromatic x-ray computed tomography using synchrotron radiation

We describe a technique of three-dimensional computed to- mography (3-D CT) using monochromatic x rays generated by synchro- tron radiation, which performs a direct reconstruction of a 3-D volume image of an object from its cone-beam projections. For the development, we propose a practical scanning orbit of the x-ray source to obtain com- plete 3-D information on an object, and its corresponding 3-D image reconstruction algorithm. The validity and usefulness of the proposed scanning orbit and reconstruction algorithm were confirmed by computer simulation studies. Based on these investigations, we have developed a prototype 3-D monochromatic x-ray CT using synchrotron radiation, which provides exact 3-D reconstruction and material-selective imaging by using the K-edge energy subtraction technique. © 1998 Society of Photo- Optical Instrumentation Engineers. (S0091-3286(98)03508-9)

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