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12 April 2002 Simulation of x-ray projections for 3D cone-beam tomography
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Proceedings Volume 4536, International Workshop on Photonics and Imaging in Biology and Medicine; (2002) https://doi.org/10.1117/12.462535
Event: International Workshop on Photonics and Imaging in Biology and Medicine, 2001, Wuhan, China
Abstract
In this paper, we present a general approach to obtain the x-ray projections in cone-beam tomography in order to get rid of random factors in the measurement so as to support proceeding three dimensional (3D) reconstruction. First, the phantom is discretized into cubic volume through inverse transformation, then a generalized projection procedure is proposed to the digitized result without concerning what the phantom exactly be. In the second step line integrals are calculated to obtain the projection of each x-ray through accumulation of tri-linear interpolation. Considering projection angles, a rotation matrix is proposed to the x- ray source and the detector plane so we can get projections in arbitrary angles. In this approach the algorithm is easy to be extended and irregular objects can also be processed. The algorithm is implemented in Visual C++ and experiments with different models show satisfactory experimental results.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zhongyuan Qin, Xuan-qin Mu, Ping Wang, and Yuanlong Cai "Simulation of x-ray projections for 3D cone-beam tomography", Proc. SPIE 4536, International Workshop on Photonics and Imaging in Biology and Medicine, (12 April 2002); doi: 10.1117/12.462535; https://doi.org/10.1117/12.462535
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