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Enhanced x-ray imaging for a thin film cochlear implant with metal artefacts using phase retrieval tomography

Journal Article


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Abstract


  • Phase retrieval tomography has been successfully used to enhance imaging in systems that exhibit poor absorption contrast. However, when highly absorbing regions are present in a sample, so-called metal artefacts can appear in the tomographic reconstruction. We demonstrate that straightforward approaches for metal artefact reconstruction, developed in absorption contrast tomography, can be applied when using phase retrieval. Using a prototype thin film cochlear implant that has high and low absorption components made from iridium (or platinum) and plastic, respectively, we show that segmentation of the various components is possible and hence measurement of the electrode geometry and relative location to other regions of interest can be achieved. © 2012 American Institute of Physics.

UOW Authors


  •   Arhatari, B D. (external author)
  •   Harris, Alexander (external author)
  •   Paolini, Antonio G. (external author)
  •   Peele, Andrew G. (external author)

Publication Date


  • 2012

Citation


  • Arhatari, B. D., Harris, A. R., Paolini, A. G. & Peele, A. G. (2012). Enhanced x-ray imaging for a thin film cochlear implant with metal artefacts using phase retrieval tomography. Journal of Applied Physics, 111 (11), 114904-1-114904-6.

Scopus Eid


  • 2-s2.0-84863311572

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2850&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1848

Start Page


  • 114904-1

End Page


  • 114904-6

Volume


  • 111

Issue


  • 11

Abstract


  • Phase retrieval tomography has been successfully used to enhance imaging in systems that exhibit poor absorption contrast. However, when highly absorbing regions are present in a sample, so-called metal artefacts can appear in the tomographic reconstruction. We demonstrate that straightforward approaches for metal artefact reconstruction, developed in absorption contrast tomography, can be applied when using phase retrieval. Using a prototype thin film cochlear implant that has high and low absorption components made from iridium (or platinum) and plastic, respectively, we show that segmentation of the various components is possible and hence measurement of the electrode geometry and relative location to other regions of interest can be achieved. © 2012 American Institute of Physics.

UOW Authors


  •   Arhatari, B D. (external author)
  •   Harris, Alexander (external author)
  •   Paolini, Antonio G. (external author)
  •   Peele, Andrew G. (external author)

Publication Date


  • 2012

Citation


  • Arhatari, B. D., Harris, A. R., Paolini, A. G. & Peele, A. G. (2012). Enhanced x-ray imaging for a thin film cochlear implant with metal artefacts using phase retrieval tomography. Journal of Applied Physics, 111 (11), 114904-1-114904-6.

Scopus Eid


  • 2-s2.0-84863311572

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2850&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1848

Start Page


  • 114904-1

End Page


  • 114904-6

Volume


  • 111

Issue


  • 11