Velocity Vector Imaging of Longitudinal Mechanical Properties of Upstream and Downstream Shoulders and Fibrous Cap Tops of Human Carotid Atherosclerotic Plaque
| Autor: | Zhi-Yun Wang, Xiao-Zhen Huang, Xiao-Hua Dai, Mei Zhang M.D., Yun-Zhang M.D. |
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| Rok vydání: | 2012 |
| Předmět: |
Adult
Carotid Artery Diseases Diagnostic Imaging Male medicine.medical_specialty Longitudinal strain Shoulders Upstream and downstream (transduction) Internal medicine medicine Humans Radiology Nuclear Medicine and imaging Aged Ultrasonography Aged 80 and over business.industry Fibrous cap Plaque rupture Peak systolic strain Anatomy Middle Aged Elasticity Plaque Atherosclerotic Velocity vector Carotid Arteries medicine.anatomical_structure Cardiology Female Stress Mechanical Cardiology and Cardiovascular Medicine Densitometry business |
| Zdroj: | Echocardiography. 30:211-218 |
| ISSN: | 0742-2822 |
| DOI: | 10.1111/echo.12005 |
| Popis: | Aims: Atherosclerotic plaque rupture is closely related to high regional mechanical stress in the plaque itself. We aimed to explore the longitudinal mechanical properties of upstream and downstream shoulders and fibrous cap tops of human atherosclerotic plaques in vivo by velocity vector imaging (VVI) combined with acoustic densitometry (AD) imaging. Methods and Results: We included 135 patients with carotid atherosclerotic plaque. VVI and AD were used to examine 3 regions of carotid plaque along the longitudinal-axis view. A total of 405 regions were classified with low or high AD values by corrected averages image intensity (AIIc%) < or ≥50, respectively. Peak systolic strain, strain rate (SR), and velocity were significantly greater for upstream than downstream shoulders and fibrous cap tops of carotid plaque (P |
| Databáze: | OpenAIRE |
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