Journal Article

DKFZ-2024-02727

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Rapid Stiffness Mapping in Soft Biologic Tissues With Micrometer Resolution Using Optical Multifrequency Time-Harmonic Elastography.

Jordan, J. ; Jaitner, N. ; Meyer, T. ; Bramè, L.DKFZ* ; Ghrayeb, M. ; Köppke, J.DKFZ* ; Böhm, O. ; Chandia, S. K. ; Zaburdaev, V. ; Chai, L. ; Tzschätzsch, H. ; Mura, J. ; Braun, J. ; Hagemann, A. I. H.DKFZ* ; Sack, I.

2025
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/advs.202410473

Abstract: Rapid mapping of the mechanical properties of soft biological tissues from light microscopy to macroscopic imaging can transform fundamental biophysical research by providing clinical biomarkers to complement in vivo elastography. This work introduces superfast optical multifrequency time-harmonic elastography (OMTHE) to remotely encode surface and subsurface shear wave fields for generating maps of tissue stiffness with unprecedented detail resolution. OMTHE rigorously exploits the space-time propagation characteristics of multifrequency time-harmonic waves to address current limitations of biomechanical imaging and elastography. Key solutions are presented for stimulation, wave decoding, and stiffness reconstruction of shear waves at multiple harmonic frequencies, all tuned to provide consistent stiffness values across resolutions from microns to millimeters. OMTHE's versatility is demonstrated by simulations, phantoms, Bacillus subtilis biofilms, zebrafish embryos and adult zebrafish, reflecting the diversity of biological systems from a mechanics perspective. By zooming in on stiffness details from coarse to finer scales, OMTHE has the potential to advance mechanobiology and offers a way to perform biomechanics-based tissue histology that consistently matches in vivo time-harmonic elastography in patients.

Keyword(s): biofilms ; multifrequency shear waves ; optical microscopy ; soft tissue stiffness ; time harmonic elastography elastography ; zebrafish

Note: 2025 Feb;12(8):e2410473

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Contributing Institute(s):

1. DKTK Koordinierungsstelle Berlin (BE01)

Research Program(s):

1. 899 - ohne Topic (POF4-899) (POF4-899)

Appears in the scientific report 2024

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