Mechanical Assessment in Atherosclerosis Based on Photoacoustic Viscoelasticity Imaging

Early identification of vulnerable plaques is a major challenge in diagnosis and assessment of atherosclerosis. In atherosclerotic plaque development, the proportion change in components caused plaque mechanical property change and induced plaque rupture. In this paper, a photoacoustic viscoelastici...

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Published inPhotonics Vol. 11; no. 5; p. 471
Main Authors Zhang, Xingchao, Shi, Xiaohan, Wu, Hui, Bai, Caixun, Xiu, Junshan, Zhao, Yue
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.05.2024
Subjects
Apolipoprotein E
Apolipoproteins
Arteriosclerosis
Atherosclerosis
atherosclerotic plaques
Blood vessels
Cholesterol
Collagen
Diagnosis
High cholesterol diet
High fat diet
Lasers
Light
Lipids
mechanical assessment
Mechanical properties
Morphology
photoacoustic imaging
Plaques
Rheology
Viscoelasticity
Viscosity
vulnerability
China
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Summary:Early identification of vulnerable plaques is a major challenge in diagnosis and assessment of atherosclerosis. In atherosclerotic plaque development, the proportion change in components caused plaque mechanical property change and induced plaque rupture. In this paper, a photoacoustic viscoelasticity imaging (PAVEI) technique was proposed to measure the viscosity–elasticity ratio of atherosclerotic plaque and evaluated for the potential in characterizing vulnerable plaques. Apolipoprotein E-knockout mice fed with a high-fat/high-cholesterol diet were chosen as the atherosclerotic model. Plaque component phantoms were examined to demonstrate the high efficiency of PAVEI in detecting the proportion change in components compared to single elasticity or viscosity detection. Finally, atherosclerotic plaques from mice aortas at different stages were imaged by PAVEI, which provided an insight into the compositional and functional characterization of vulnerability plaques and suggested its potential applications in the identification of high-risk plaques.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics11050471