Related Experiment Video
Updated: Aug 16, 2025
06:26
Particle Image Velocimetry Investigation of Hemodynamics via Aortic Phantom
Published on: February 25, 2022
4.5K
Experimental Study of the Propagation Process of Dissection Using an Aortic Silicone Phantom
Qing-Zhuo Chi1, Yang-Yang Ge2, Zhen Cao1
1Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China.
Journal of Functional Biomaterials
|December 22, 2022
Summary
Acute aortic dissection (AD) formation is difficult to track. A new silicone phantom model shows that primary tears and weakened vessel adhesion are key factors in AD development, aiding early risk prediction.
Area of Science:
- Biomedical engineering
- Cardiovascular research
- Medical device development
Background:
- Acute aortic dissection (AD) has a high mortality rate (65-70%).
- Understanding the progression of AD formation remains a significant challenge.
- Current methods lack detailed insight into the dynamic development of dissection.
Purpose of the Study:
- To develop and utilize a novel tear-embedded silicone phantom.
- To observe and analyze the process of aortic dissection development in a controlled setting.
- To identify key factors influencing the initiation and progression of AD.
Main Methods:
- Fabrication of silicone phantoms with embedded torn areas and primary tear features.
- Utilized CT scanning and laser lightening for precise observation.
- Monitored changes in true lumen (TL) and false lumen (FL) volume and thickness during dissection development.
Main Results:
- Lower pressure was required to initiate dissection in models with greater interlayer adhesion damage.
- The true lumen (TL) volume increased by 25.5% at dissection initiation.
- A 19.5% enlargement of the tear size was observed, supporting interlaminar separation theories.
Conclusions:
- Primary tears and weakened adhesion of arterial wall layers are critical in AD development.
- Specific arterial wall damage, particularly straight inner lumen morphology, may serve as early AD risk predictors.
- This phantom model offers valuable insights into AD pathogenesis and potential early detection strategies.
