The application of beam hardening correction for industrial X-ray computed tomography

X-ray computed tomography (CT) is a non-destructive, radiographic scanning technique that enables the visualisation of both the internal geometry and the composition of a workpiece; X-ray CT is therefore well suited for non-destructive inspection tasks. Several physical processes reduce the quality of CT images, and therefore influence both qualitative and quantitative analyses made from CT data-sets; one such physical process is beam hardening. In this work a simulation-based method is presented for correcting beam hardening, this method is applied to industrial X-ray CT measurement tasks and demonstrated to improve CT image quality.

[1]  C. McCollough,et al.  CT scanner x-ray spectrum estimation from transmission measurements. , 2011, Medical physics.

[2]  Matthias Franz,et al.  Reducing non-linear artifacts of multi-material objects in industrial 3D computed tomography , 2008 .

[3]  Yutaka Ohtake,et al.  A Non-iterative Data-driven Beam Hardening Correction for Single-material Objects , 2012 .

[4]  A. Macovski,et al.  Energy-selective reconstructions in X-ray computerised tomography , 1976, Physics in medicine and biology.

[5]  Manuel Dierick,et al.  A novel beam hardening correction method requiring no prior knowledge, incorporated in an iterative reconstruction algorithm , 2012 .

[6]  O Nalcioglu,et al.  Post-reconstruction method for beam hardening in computerised tomography. , 1979, Physics in medicine and biology.

[7]  B. Bjärngard,et al.  Correction for beam hardening in computed tomography. , 1978, Medical physics.

[8]  Xiaochuan Pan,et al.  A robust method of x-ray source spectrum estimation from transmission measurements: Demonstrated on computer simulated, scatter-free transmission data , 2005 .

[9]  G. Herman.  Correction for beam hardening in computed tomography. , 1979, Physics in medicine and biology.

[10]  H. Zaidi,et al.  A hybrid approach for fast simulation of X-ray computed tomography , 2007, 2007 IEEE Nuclear Science Symposium Conference Record.

[11]  Graham R. Davis,et al.  A modelling approach to beam hardening correction , 2008, Optical Engineering + Applications.

[12]  Takashi Sasaki,et al.  Geant4, a toolkit for the simulation of the passage of particles through matter. , 2014 .