Journal
PHYSICA SCRIPTA
Volume 90, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0031-8949/90/10/108006
Keywords
cochlear dynamics; micromecanics; coherence; phase-contrast; synchrotron; x-rays; imaging
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Funding
- NSF [IBN-0415901]
- Hugh Knowles Foundation
- United States Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357]
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At present, imaging of cochlear mechanics at mid-cochlear turns has not been accomplished. Although challenging, this appears possible with partially coherent hard x-rays. The present study shows results from stroboscopic x-ray imaging of a test object at audio frequencies. The vibration amplitudes were quantified. In a different set of experiments, an intact and calcified gerbil temporal bone was used to determine displacements of the reticular lamina, tectorial membrane, and Reissner's membrane with the Lucas and Kanade video flow algorithm. The experiments validated high frequency x-ray imaging and imaging in a calcified cochlea. The present work is key for future imaging of cochlear micromechanics at a high spatial resolution.
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