Key result
Elasticity statistics improve arterial wall classification to differentiate lipids from clots and fibrous from calcified tissues.
Why the study?
Differentiating specific tissue types within the arterial wall based on elasticity imaging remains challenging, particularly distinguishing lipids from blood clots and fibrous tissue from calcified tissue.
Statistical properties of elasticity distribution may improve the classification of arterial wall tissues, specifically differentiating lipids from blood clots and fibrous from calcified tissues.
Phased tracking yields tissue-specific arterial elasticity maps; leaves open clinical validation before diagnostic adoption.
The phased tracking method was developed for measuring the minute change in thickness during one cardiac cycle and the elasticity of the arterial wall. By comparing elasticity images measured by the phased tracking method with the corresponding pathological images, the elasticity distribution for each tissue in the arterial wall was determined. We have already measured the elasticity distributions for lipids, fibrous tissues (mixture of smooth-muscle and collagen fiber), blood clots and calcified tissues. From these previous studies, it was found that arterial tissues can be classified into soft tissues (lipids and blood clots) and hard tissues (fibrous tissue and calcified tissue) on the basis of their elasticity. However, it was difficult to differentiate lipids from blood clots and also fibrous tissue from calcified tissue. In this study, we investigated how to improve the tissue classification of the arterial wall using statistical properties of the elasticity distribution of each tissue.
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Inagaki et al. (2006) studied Arterial wall tissue classification. Statistical properties of elasticity distribution was evaluated on Improvement of tissue classification of the arterial wall. Statistical properties of the elasticity distribution were investigated to improve the classification of arterial wall tissues, specifically differentiating lipids from blood clots and fibrous from calcified tissues.
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