Volume 28 Issue 5
May  2013
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FU Jian, TAN Ren-bo, ZHAO Feng. An image reconstruction method for improving CT spatial resolution[J]. Journal of Aerospace Power, 2013, 28(5): 971-976.
Citation: FU Jian, TAN Ren-bo, ZHAO Feng. An image reconstruction method for improving CT spatial resolution[J]. Journal of Aerospace Power, 2013, 28(5): 971-976.

An image reconstruction method for improving CT spatial resolution

  • Received Date: 2012-05-28
  • Publish Date: 2013-05-28
  • In order to improve the spatial resolution of industrial computed tomography (CT) without changing the hardware,the half-pixel offset scanning mode was analyzed and a direct reconstruction algorithm,which was based on the algebraic iteration technique,was proposed.This algorithm adopted area-weight to execute directly the iterative update of the reconstructed value using the acquired projection data.Computer simulation analysis with a star-type spatial resolution phantom was implemented and a modulation of 0.8 was reached at the cut-off frequency.It demonstrates that the proposed method has the potential of improving the spatial resolution.The industrial CT experimental results of a standard spatial resolution phantom validate the feasibility and the effect of the method.The proposed approach is easy to implement and has a promising application future.

     

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