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- W4319348049 abstract "Abstract Cochlear implant restores hearing loss through electrical stimulation of the hearing nerve from within the cochlea. Unfortunately, surgical implantation of this neuroprosthesis often traumatizes delicate intracochlear structures, resulting in loss of residual hearing and compromising hearing in noisy environments and appreciation of music. To avoid cochlear trauma, insertion techniques and devices have to be adjusted to the cochlear microanatomy. However, existing techniques were unable to achieve a representative visualization of the human cochlea: classical histology damages the tissues and lacks 3D perspective; standard microCT fails to resolve the cochlear soft tissues; and previously used X-ray contrast-enhancing staining agents are destructive. In this study, we overcame these limitations by performing contrast-enhanced microCT imaging (CECT) with a novel polyoxometalate staining agent Hf-WD POM. With Hf-WD POM-based CECT, we achieved nondestructive, high-resolution, simultaneous, 3D visualization of the mineralized and soft microstructures in fresh-frozen human cochleae. This enabled quantitative analysis of the true intracochlear dimensions and led to anatomical discoveries, concerning surgically-relevant microstructures: the round window membrane, the Rosenthal’s canal and the secondary spiral lamina. Furthermore, we demonstrated that Hf-WD POM-based CECT enables quantitative assessment of these structures as well as their trauma." @default.
- W4319348049 created "2023-02-08" @default.
- W4319348049 creator A5002172692 @default.
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- W4319348049 creator A5028170041 @default.
- W4319348049 creator A5058825456 @default.
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- W4319348049 creator A5070263200 @default.
- W4319348049 date "2023-02-07" @default.
- W4319348049 modified "2023-10-18" @default.
- W4319348049 title "Human cochlear microstructures at risk of electrode insertion trauma, elucidated in 3D with contrast-enhanced microCT" @default.
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