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Related Experiment Video

Updated: Jul 10, 2026

A Method to Study the Correlation Between Local Collagen Structure and Mechanical Properties of Atherosclerotic Plaque Fibrous Tissue
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Published on: November 11, 2022

Biomechanics of Plaque Rupture and Cardiovascular Calcification.

Luis Cardoso1

  • 1Department of Biomedical Engineering, The City College of New York, New York, NY, USA. Cardoso@ccny.cuny.edu.

Advances in Experimental Medicine and Biology
|July 8, 2026
PubMed
Summary

Atheroma cap rupture, leading to myocardial infarction, is driven by complex biomechanical and biological factors. Microcalcifications and plaque composition significantly influence rupture risk.

Keywords:
Atherosclerotic plaque calcificationAtherosclerotic plaque ruptureBiomechanicsMicrocalcificationsVascular calcification

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Quantification of Atherosclerotic Plaque Activity and Vascular Inflammation using [18-F] Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography (FDG-PET/CT)
10:02

Quantification of Atherosclerotic Plaque Activity and Vascular Inflammation using [18-F] Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography (FDG-PET/CT)

Published on: May 2, 2012

Area of Science:

  • Cardiovascular Biology
  • Biomedical Engineering
  • Pathology

Background:

  • Atheroma cap rupture is a critical event leading to myocardial infarction.
  • Plaque vulnerability results from intricate systemic, biological, and biomechanical interactions.
  • Arterial wall experiences mechanical stresses like wall shear stress (WSS) during blood flow.

Purpose of the Study:

  • To explore the biomechanical factors contributing to atheroma cap rupture.
  • To elucidate the role of plaque morphology, composition, and biological environment in rupture.
  • To summarize the impact of calcification, particularly microcalcifications, on atheroma biomechanics and rupture risk.

Main Methods:

  • Review of biomechanical principles governing arterial wall stress.
  • Analysis of factors influencing atheroma cap's ultimate tensile stress.
  • Synthesis of literature on plaque composition and biological markers related to rupture.

Main Results:

  • Physiological or elevated WSS alone cannot cause cap rupture; rupture stress is orders of magnitude higher.
  • Plaque morphology (positive remodeling, low stenosis), composition (soft lipid pools, thin cap), and biological factors (inflammation, macrophages, microcalcifications) increase stress.
  • Microcalcifications play a significant role in increasing atheroma cap rupture risk.

Conclusions:

  • Understanding the interplay of morphology, composition, and biological environment is crucial for comprehending plaque rupture.
  • Biomechanical stress thresholds and plaque vulnerability factors are key to preventing myocardial infarction.
  • Further research into atheroma biomechanics can inform strategies for managing atherosclerotic disease.