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An image reconstruction method for transmission computed tomography with the constraint of the linear attenuation
Huaiyong Bai1, Ming Su1, Chengguo Pang1
1Institute of Materials, China Academy of Engineering Physics, Jiangyou, 621907, China.
Abstract:
For the reconstructed image of transmission computed tomography, the linear attenuation coefficients of the diagnosed object may improve the image quality by adding additional constraint besides the projection data. In the present work, an image reconstruction method with the constraint of the linear attenuation coefficients is developed and two models including a classical numerical Shepp-Logan model and a Monte Carlo model are used to show the corresponding benefits. The results indicate that the number of the projection angles is potentially decreased to 1/3 of itself while the quality of the reconstructed image is not deteriorated.
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