Abstract
ObjectiveThis paper presents the use of the texture matching method to measure the rabbit carotid artery elasticity value of the experimental group and control group respectively. It compares the experimental rabbits, when they are prompted by pathological histology to be at the period of carotid atherosclerosis fatty streaks and fiber plaques, with the control group.MethodsWe have used ultrasound linear array probe for scanning the rabbit carotid arteries. This allows us to obtain the wall shear stress (WSS) and the elasticity values in the atherosclerotic arteries. Using statistical analysis, we are able to clarify whether the texture matching method can diagnose atherosclerosis at the early stage. We also analyze the rabbit carotid artery elasticity and WSS values to make sure whether there is a correlation between both. Combining the texture matching method with the WSS quantitative analysis in the future can enable better prediction of the occurrence and development of atherosclerosis by using noninvasive medical imaging techniques.ResultsThis study has confirmed that from the 2nd to the 10th week, with the development of atherosclerosis, the arterial WSS reduction has a negative correlation with the increasing of artery wall elasticity, which means that as the arterial WSS decreases the arterial wall becomes less elastic. Correlating shear stress with atherosclerosis can clarify that WSS can be used as one of the effective parameters of early diagnosis of atherosclerosis.ConclusionIn summary, we have found that the elasticity value can reflect the degree of atherosclerosis more objectively. Therefore, by using noninvasive imaging, the quantitative analysis of shear stress and combined with texture matching method can assist in the early diagnosis of atherosclerosis.
Highlights
Cardiovascular diseases have a high mortality rate in China [1], and the key cause of cerebral and myocardial infarction is atherosclerosis [2, 3]
Analysis of the common carotid artery elasticity There are statistical differences in t test between the two groups from the 8th week onwards. It suggests that the rabbit carotid artery elasticity level of the experimental rabbits is higher than that of the control group in the 8th week and the 10th week (Table 1)
Columnar analysis diagram of rabbit carotid artery elasticity value The rabbit carotid artery elasticity value of the experimental group has increased with clear observation after the 8th week (Fig. 3)
Summary
Cardiovascular diseases have a high mortality rate in China [1], and the key cause of cerebral and myocardial infarction is atherosclerosis [2, 3]. The formation of atherosclerosis is a long and complicated process. Atherosclerosis is divided into four types, which are fatty streaks, fibrous plaque, atheromatous plaque, and complicated lesions [4]. Zhang et al BioMed Eng OnLine (2018) 17:5 clinical symptoms of atherosclerotic stenosis [5], which means that stenosis is not the critical factor in evaluating atherosclerosis. Low and oscillating WSS is often used as an index of causation of atherosclerotic plaque [19], which can deem it to be a reliable indicator for evaluating atherosclerosis [20, 21]. Low WSS values causes atherosclerotic lesions, and this may be due to flow separations [25]
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