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Updated: Sep 28, 2025

Author Spotlight: Characterizing Environmental Biofilm Mechanics Using Optical Coherence Elastography and its Applications in Wastewater Treatment
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Combinational Elastography.

Takahiro Sakamoto1,2, Shimpei Ito1, Akihiro Endo1

  • 1Division of Cardiology, Shimane University Faculty of Medicine.

International Heart Journal
|March 31, 2022
PubMed
Summary

Combined elastography effectively assesses liver congestion in heart failure patients, distinguishing it from fibrosis and monitoring treatment response. This noninvasive method aids in managing liver complications associated with heart failure.

Keywords:
Liver stiffnessShear wave imagingStrain imagingUltrasound

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Area of Science:

  • Hepatology
  • Cardiology
  • Medical Imaging

Background:

  • Heart failure (HF) can lead to liver congestion and stiffness, impacting liver health.
  • Elastography offers noninvasive measurement of organ stiffness, with shear wave and strain elastography used for liver fibrosis (LF) assessment.
  • Current elastography methods have limitations in differentiating congestion from fibrosis and their utility in HF patients is not well-established.

Purpose of the Study:

  • To evaluate the effectiveness of combined shear wave and strain elastography (combinational elastography) for assessing liver congestion in heart failure patients.
  • To investigate the relationship between combinational elastography measurements and clinical characteristics in HF patients.
  • To assess the impact of medical treatment on liver congestion and fibrosis markers in HF inpatients.

Main Methods:

  • Prospective study including 51 HF patients and 10 healthy controls.
  • Utilized combinational elastography, measuring shear wave velocity (Vs) and LF index.
  • Correlated elastography findings with clinical parameters like brain natriuretic peptide and congestion scores, and assessed changes after treatment in inpatients.

Main Results:

  • Shear wave velocity (Vs) was significantly higher in HF patients compared to controls (P = 0.002).
  • The LF index did not significantly differ between groups (P = 0.680), suggesting it reflects fibrosis rather than congestion.
  • Vs decreased significantly after treatment (P = 0.026), while the LF index remained unchanged (P = 0.664).
  • Vs correlated with brain natriuretic peptide levels (r = 0.343) and congestion scores (r = 0.455).

Conclusions:

  • Combinational elastography is a valuable tool for assessing liver congestion in heart failure.
  • This method can differentiate between liver congestion and liver fibrosis.
  • Combinational elastography aids in evaluating the therapeutic effects of HF treatment on liver status.