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Rib quality assessment using quantitative ultrasound imaging of bone.

M C Herrera1, F Sundblad2, Ari Salmi3

  • 1Department of Kinesiology, University of Waterloo, 200 University Avenue West, Waterloo N2L3G1, ON, Canada.

Ultrasonics
|February 13, 2026
PubMed
Summary

Quantitative ultrasound imaging of bone (QUSIB) non-invasively assesses rib quality, crucial for breast cancer patients. This method shows promise for evaluating bone changes and predicting fracture risk.

Keywords:
Bone structureBreast cancerCortical boneFracture riskQuantitative ultrasoundRib bonesUltrasound imaging

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Area of Science:

  • Biomedical Engineering
  • Medical Imaging
  • Orthopedics

Background:

  • Breast cancer treatments like radiation and bisphosphonate therapy can negatively impact bone quality, increasing fracture risk.
  • Accurate assessment of rib bone quality is essential for managing treatment side effects and patient outcomes.

Purpose of the Study:

  • To evaluate the feasibility of quantitative ultrasound imaging of bone (QUSIB) for non-ionizing assessment of rib bone quality.
  • To investigate QUSIB's ability to detect treatment-induced changes in rib microstructure relevant to fracture risk.

Main Methods:

  • Developed in silico rib models simulating five years of radiation and bisphosphonate therapy effects.
  • Used broadband ultrasound propagation to measure backscatter and attenuation coefficients.
  • Employed univariate and partial least squares (PLS) regression analyses for correlating ultrasound parameters with bone structural and material properties.
  • Conducted in vivo QUSIB measurements on ribs and tibias of healthy volunteers.

Main Results:

  • Ultrasound attenuation at 7-8 MHz strongly correlated with trabecular bone volume fraction (BV/TVtb) and cortical porosity.
  • PLS models accurately predicted trabecular BV/TVtb (R²=0.50) and cortical porosity (R²=0.58).
  • In vivo measurements showed QUSIB parameters closely matched in silico findings and did not differ significantly between ribs and tibias.

Conclusions:

  • QUSIB biomarkers effectively reflect rib microstructure and treatment-induced alterations.
  • QUSIB demonstrates potential as a non-ionizing tool for assessing rib bone quality and fracture risk in breast cancer patients.