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  1. Home
  3. Viscoelastic Properties Of Colorectal Liver Metastases Reflect Tumour Cell Viability.
  1. Home
  3. Viscoelastic Properties Of Colorectal Liver Metastases Reflect Tumour Cell Viability.

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Viscoelastic properties of colorectal liver metastases reflect tumour cell viability.

Lisa-Marie Skrip1, Simon Moosburner1,2, Peter Tang1

  • 1Department of Surgery, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt- Universität zu Berlin, Augustenburger Platz 1, 13353, Berlin, Germany.

Journal of Translational Medicine
|August 16, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Magnetic resonance elastography (MRE) can assess biomechanical changes in colorectal cancer liver metastases (CRLM), correlating stiffness with cell viability. This non-invasive technique may aid personalized treatment strategies for CRLM patients.

Keywords:
Colorectal liver metastasesMagnetic resonance elastographyPreoperative chemotherapyRegression

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Area of Science:

  • Biophysics
  • Oncology
  • Medical Imaging

Background:

  • Colorectal cancer frequently metastasizes to the liver (CRLM), necessitating improved diagnostic tools for personalized therapy.
  • Biomechanical properties, measurable via magnetic resonance elastography (MRE), offer potential as novel diagnostic markers for CRLM.
  • This study investigates ex vivo MRE combined with histology and radiology to identify biomechanics-based markers of tumor cell viability.

Purpose of the Study:

  • To evaluate the utility of ex vivo MRE in characterizing biomechanical changes in CRLM.
  • To correlate MRE-derived biomechanical properties with tumor cell viability and treatment response.
  • To explore the potential of MRE as a diagnostic tool for personalized CRLM therapy.

Main Methods:

  • Ex vivo MRE was performed on 34 CRLM specimens across a frequency range of 500–5300 Hz.
  • Shear wave speed, wave penetration rate, and rheological parameters (spring-pot model, powerlaw exponent α) were analyzed.
  • Histological analysis (H&E staining, quantitative measures) and radiological assessment (RECIST) were conducted for correlation.

    • Main Results:

    • Higher MRE frequencies correlated significantly with tumor regression, indicating stiffer tissue in less viable tumors (p ≤ 0.05).
    • Rheological analysis showed more elastic properties (lower α) in non-viable tumors compared to viable ones (p = 0.03).
    • Histological analysis revealed decreased nuclear size/density and increased aspect ratio in tumors with major treatment response.

    Conclusions:

    • Ex vivo MRE can characterize biomechanical changes related to cell viability in CRLM.
    • MRE-derived biomechanical markers show promise for assessing treatment response and guiding personalized therapy for CRLM.
    • MRE has potential for clinical application in tailoring treatment plans for CRLM patients.