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4D deep learning for real-time volumetric optical coherence elastography
Citation Link: https://doi.org/10.15480/882.3273
Publikationstyp
Journal Article
Publikationsdatum
2021
Sprache
English
Institut
TORE-URI
Volume
16
Issue
1
Start Page
23
End Page
27
Citation
International Journal of Computer Assisted Radiology and Surgery 1 (16): 23-27 (2021)
Publisher DOI
Scopus ID
2-s2.0-85091753895
Publisher
Springer
Purpose: Elasticity of soft tissue provides valuable information to physicians during treatment and diagnosis of diseases. A number of approaches have been proposed to estimate tissue stiffness from the shear wave velocity. Optical coherence elastography offers a particularly high spatial and temporal resolution. However, current approaches typically acquire data at different positions sequentially, making it slow and less practical for clinical application.
Methods: We propose a new approach for elastography estimations using a fast imaging device to acquire small image volumes at rates of 831 Hz. The resulting sequence of phase image volumes is fed into a 4D convolutional neural network which handles both spatial and temporal data processing. We evaluate the approach on a set of image data acquired for gelatin phantoms of known elasticity.
Results: Using the neural network, the gelatin concentration of unseen samples was predicted with a mean error of 0.65 ± 0.81 percentage points from 90 subsequent volumes of phase data only. We achieve a data acquisition and data processing time of under 12 ms and 22 ms, respectively.
Conclusions: We demonstrate direct volumetric optical coherence elastography from phase image data. The approach does not rely on particular stimulation or sampling sequences and allows the estimation of elastic tissue properties of up to 40 Hz.
Methods: We propose a new approach for elastography estimations using a fast imaging device to acquire small image volumes at rates of 831 Hz. The resulting sequence of phase image volumes is fed into a 4D convolutional neural network which handles both spatial and temporal data processing. We evaluate the approach on a set of image data acquired for gelatin phantoms of known elasticity.
Results: Using the neural network, the gelatin concentration of unseen samples was predicted with a mean error of 0.65 ± 0.81 percentage points from 90 subsequent volumes of phase data only. We achieve a data acquisition and data processing time of under 12 ms and 22 ms, respectively.
Conclusions: We demonstrate direct volumetric optical coherence elastography from phase image data. The approach does not rely on particular stimulation or sampling sequences and allows the estimation of elastic tissue properties of up to 40 Hz.
Schlagworte
Convolutional neuronal networks
Deep learning
Optical coherence elastography
Real-time imaging
DDC Class
004: Informatik
510: Mathematik
600: Technik
610: Medizin
Projekt(e)
More Funding Information
Open Access funding enabled and organized by Projekt DEAL. This study was partially Funded by the Technical University of
Hamburg i3 lab initiative (internal funding id T-LP-E01-WTM-1801-02).
Hamburg i3 lab initiative (internal funding id T-LP-E01-WTM-1801-02).