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Non-Invasive Determination of Zero-Pressure Geometry of Arterial Aneurysms
- Source :
- Annals of Biomedical Engineering. 34:1414-1419
- Publication Year :
- 2006
- Publisher :
- Springer Science and Business Media LLC, 2006.
-
Abstract
- Arterial aneurysms are in a pre-deformed state in vivo under non-zero pressure. The ability to determine their zero pressure geometry may help in improving accuracy of determination of stress distribution and reverse estimation of material properties from dynamic imaging data. An approximate method to recover the zero pressure geometry of the AAA is proposed. This method is motivated by the observation that the patterns in displacement field for a given AAA are strikingly consistent in an AAA under all physiological pressures. The basic principle is to leverage this observation to iteratively identify the geometry that when subjected to the in vivo pressure, will recover the geometry reconstructed from in vivo imaging. The methodology is demonstrated and validated using patient-specific AAA models.
- Subjects :
- Quantitative Biology::Tissues and Organs
Dynamic imaging
Finite Element Analysis
Physics::Medical Physics
Biomedical Engineering
Blood Pressure
Geometry
Stress (mechanics)
Imaging, Three-Dimensional
Aneurysm
Predictive Value of Tests
medicine
Humans
Leverage (statistics)
cardiovascular diseases
Mathematics
Models, Cardiovascular
Elasticity (physics)
medicine.disease
Elasticity
Finite element method
Displacement field
cardiovascular system
Stress, Mechanical
Material properties
Aortic Aneurysm, Abdominal
Subjects
Details
- ISSN :
- 15739686 and 00906964
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Annals of Biomedical Engineering
- Accession number :
- edsair.doi.dedup.....9ec51ce6f3eae290001db1f1234ab3e0