Motion artifact reduction for IVUS-based thermal strain imaging
| Autor: | S.J. Chetcuti, Y. Shi, Matthew O'Donnell, F. Javier de Ana |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Male
Materials science Acoustics and Ultrasonics Movement Deformation (meteorology) Optics Motion estimation Image Interpretation Computer-Assisted Intravascular ultrasound medicine Humans Computer Simulation Electrical and Electronic Engineering Instrumentation Ultrasonography Interventional Motion compensation medicine.diagnostic_test business.industry Models Cardiovascular Temperature Biomechanics Arteries Image Enhancement Elasticity Stress Mechanical Elastography Artifacts business Linear least squares Biomedical engineering Interpolation |
| Zdroj: | IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 52:1312-1319 |
| ISSN: | 0885-3010 |
| DOI: | 10.1109/tuffc.2005.1509789 |
| Popis: | Thermal strain imaging (TSI) using intravascular ultrasound (IVUS) has the potential to identify lipid pools within rupture-prone arterial plaques and serve as a valuable supplement to current IVUS systems in diagnosing acute coronary syndromes. The major challenge for in vivo application of TSI will be cardiac motion, including bulk motion and tissue deformation. Simulations based on an artery model, including a lipid-filled plaque, demonstrate that effective bulk motion compensation can be achieved within a certain motion range using spatial interpolation. We also propose a practical imaging scheme to minimize mechanical strains caused by tissue deformation based on a linear least squares fitting strategy. This scheme was tested on clinical data by artificially superimposing thermal displacements corresponding to different temperature rises. Results suggest a 1-2 degrees C temperature rise is required to detect lipids in an atherosclerotic plaque in vivo. |
| Databáze: | OpenAIRE |
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