Abstract
© Springer International Publishing AG 2017.
While navigation and interventional guidance are typically based on image data, the images do not necessarily reflect mechanical tissue properties. Optical coherence elastography (OCE) presents a modality with high sensitivity and very high spatial and temporal resolution. However, OCE has a limited field of view of only 2–5 mm depth. We present a side-facing needle probe to image externally induced shear waves from within soft tissue. A first method of quantitative needle-based OCE is provided. Using a time of flight setup, we establish the shear wave velocity and estimate the tissue elasticity. For comparison, an external scan head is used for imaging. Results for four different phantoms indicate a good agreement between the shear wave velocities estimated from the needle probe at different depths and the scan head. The velocities ranging from 0.9–3.4 m/s agree with the expected values, illustrating that tissue elasticity estimates from within needle probes are feasible.
Links
- https://link.springer.com/chapter/10.1007/978-3-319-66185-8_74
- doi:https://doi.org/10.1007/978-3-319-66185-8_74
BibTeX (Download)
@conference{Latus2017,
title = {An Approach for Needle Based Optical Coherence Elastography Measurements},
author = {Sarah Latus and Christoph Otte and Matthias Schl\"{u}ter and Josua Rehra and Kevin Bizon and Hinnerk Schulz-Hildebrandt and Thore Saathoff and Gereon H\"{u}ttmann and Alexander Schlaefer},
editor = {Springer International Publishing},
url = {https://link.springer.com/chapter/10.1007/978-3-319-66185-8_74},
doi = {https://doi.org/10.1007/978-3-319-66185-8_74},
isbn = {978-3-319-66185-8},
year = {2017},
date = {2017-09-01},
booktitle = {Medical Image Computing and Computer-Assisted Intervention − MICCAI 2017},
volume = {10434},
pages = {655--663},
organization = {Springer},
abstract = {© Springer International Publishing AG 2017.
While navigation and interventional guidance are typically based on image data, the images do not necessarily reflect mechanical tissue properties. Optical coherence elastography (OCE) presents a modality with high sensitivity and very high spatial and temporal resolution. However, OCE has a limited field of view of only 2\textendash5 mm depth. We present a side-facing needle probe to image externally induced shear waves from within soft tissue. A first method of quantitative needle-based OCE is provided. Using a time of flight setup, we establish the shear wave velocity and estimate the tissue elasticity. For comparison, an external scan head is used for imaging. Results for four different phantoms indicate a good agreement between the shear wave velocities estimated from the needle probe at different depths and the scan head. The velocities ranging from 0.9\textendash3.4 m/s agree with the expected values, illustrating that tissue elasticity estimates from within needle probes are feasible.},
keywords = {fiber probes, Interventional imaging, Optical coherence elastography},
pubstate = {published},
tppubtype = {conference}
}