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Quantification of Carotid Arteries Atherosclerosis using 3D Ultrasound Images and Area-Preserving Flattened Maps

机译:使用3D超声图像和保留平面的地图量化颈动脉粥样硬化

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Quantitative measurements of the progression (or regression) of carotid plaque burden are important in monitoring patients and evaluating new treatment options. 3D ultrasound (US) has been used to monitor the progression of carotid artery plaques in symptomatic and asymptomatic patients. Different methods of measuring various ultrasound phenotypes of atherosclerosis have been developed. In this work, we extended concepts used in intima-media thickness (IMT) measurements based on 2D images and introduced a metric called 3D vessel-wall-plus-plaque thickness (3D VWT), which was obtained by computing the distance between the carotid wall and lumen surfaces on a point-by-point basis in a 3D image of the carotid arteries. The VWT measurements were then superimposed on the arterial wall to produce the VWT map. Since the progression of plaque thickness is important in monitoring patients who are at risk for stroke, we also computed the change of VWT by comparing the VWT maps obtained for a patient at two different time points. In order to facilitate the visualization and interpretation of the 3D VWT and VWT-Change maps, we proposed a technique to flatten these maps in an area-preserving manner.
机译:颈动脉斑块负担的进展(或消退)的定量测​​量对于监测患者和评估新的治疗选择非常重要。 3D超声(美国)已用于监测有症状和无症状患者的颈动脉斑块进展。已经开发了测量各种动脉粥样硬化的超声表型的不同方法。在这项工作中,我们扩展了基于2D图像的内膜中膜厚度(IMT)测量中使用的概念,并引入了一个称为3D血管壁加斑块厚度(3D VWT)的度量,该度量是通过计算颈动脉之间的距离获得的在颈动脉的3D图像中逐点绘制壁和管腔表面。然后将VWT测量值叠加在动脉壁上以生成VWT图。由于斑块厚度的变化在监测有中风风险的患者中很重要,因此我们还通过比较在两个不同时间点获得的患者的VWT图来计算VWT的变化。为了促进3D VWT和VWT-Change地图的可视化和解释,我们提出了一种以保留区域的方式展平这些地图的技术。

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