Enhanced x-ray imaging for a thin film cochlear implant with metal artefacts using phase retrieval tomography
- Department of Physics, La Trobe University, Victoria 3086 (Australia)
- School of Psychological Science, La Trobe University, Victoria 3086 (Australia)
- Australia
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.
- OSTI ID:
- 22089239
- Journal Information:
- Journal of Applied Physics, Vol. 111, Issue 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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