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The concept of dimension is important because every mathematical equation linking physical quantities must be dimensionally consistent, implying that mathematical equations must meet the following two rules. The first rule is that, in an equation, the expressions on each side of the equal sign must have the same dimensions. This is fairly intuitive since we can only add or subtract quantities of the same type (dimension). The second rule states that, in an equation, the arguments of any of the...
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Monitoring the Wall Mechanics During Stent Deployment in a Vessel
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OCT-BASED THREE DIMENSIONAL MODELING OF STENT DEPLOYMENT.

Pengfei Dong1, David Prabhu2, David L Wilson2

  • 1Department of Mechanical & Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588, USA.

International Mechanical Engineering Congress and Exposition : [Proceedings]. International Mechanical Engineering Congress and Exposition
|April 3, 2018
PubMed
Summary
This summary is machine-generated.

This study quantifies how coronary artery calcification affects stent deployment using optical coherence tomography (OCT). Findings reveal calcium morphology impacts stent expansion and malapposition, aiding pre-surgical planning.

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Area of Science:

  • Cardiovascular Interventions
  • Biomedical Engineering
  • Medical Imaging

Background:

  • Stent deployment is crucial for treating narrowed coronary arteries.
  • Stent outcomes like under-expansion and malapposition are influenced by calcification.
  • Quantifying calcification's impact on stenting remains challenging.

Purpose of the Study:

  • To capture and analyze ex vivo stent deployment.
  • To quantify the effect of calcium morphology on stent performance.
  • To provide data for pre-surgical planning in complex coronary artery cases.

Main Methods:

  • Ex vivo stenting procedure.
  • Optical coherence tomography (OCT) for high-resolution imaging.
  • Three-dimensional reconstruction of calcified plaque models.
  • Analysis of stress/strain, lumen gain, and malapposition in different calcification scenarios.

Main Results:

  • Characterization of stent crimping, balloon expansion, and recoil.
  • Demonstration of how varying calcium percentages influence stent deployment.
  • Quantitative data on lumen gain and malapposition related to calcium morphology.

Conclusions:

  • Calcium morphology significantly impacts stent deployment outcomes.
  • OCT-based modeling provides valuable insights into calcified plaque stenting.
  • This research supports improved pre-surgical planning for complex coronary interventions.