An iterative image reconstruction algorithm combined with forward and backward diffusion filtering for in-line X-ray phase-contrast computed tomography

Zhao, Y.; Sun, M.; Ji, D.; Cong, C.; Lv, W.; Zhao, Q.; Qin, L.; Jian, J.; Chen, X.; Hu, C.

doi:10.1107/S1600577518009219

Journal of Synchrotron Radiation Journal of
Synchrotron Radiation

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Figure 4
Reconstructed images of the Shepp–Logan phantom using the FBP (a) and (i), SART (b) and (j), SART-FAB4 (c) and (k), and SART-FAB8 (d) and (l) algorithms from noise-free and noisy 60-view projections. Panels (e)–(h) and (m)–(p) are magnified images of the green rectangle regions in panels (a)–(d) and (i)–(l), respectively. The red arrow denotes streak artefacts, the blue arrow denotes oscillating artefacts and the green arrow denotes low-dose noise. The pixel values of the above grey-scale images were normalized to the range [0, 255]. The display window is [0, 180].

JOURNAL OF
SYNCHROTRON
RADIATION

ISSN: 1600-5775

Volume 25| Part 5| September 2018| Pages 1450-1459

https://doi.org/10.1107/S1600577518009219

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