Lalande Alain, Khau van Kien Philippe, Salvé Nicolas, Ben Salem Douraied, Legrand Louis, Walker Paul Michael, Wolf Jean-Eric, Brunotte François
Laboratoire de Biophysique, Faculté de Médecine, Université de Bourgogne, Dijon, France.
Invest Radiol. 2002 Dec;37(12):685-91. doi: 10.1097/00004424-200212000-00008.
Aortic compliance is defined as the relative change in aortic cross-sectional area divided by the change in arterial pressure. Magnetic resonance imaging (MRI) is a useful imaging modality for the noninvasive evaluation of aortic compliance. However, manual tracing of the aortic contour is subject to important interobserver variations. To estimate the aortic compliance from cine-MRI, a method based on fuzzy logic theory was elaborated.
Seven healthy volunteers and eight patients with Marfan syndrome were examined using an ECG gated cine-MRI sequence. The aorta was imaged in the transverse plane at the level of the pulmonary trunk. A method based on fuzzy logic was developed to automatically detect the aortic contour.
Through our robust automatic contouring method, the calculation of aortic cross-sectional areas allows an estimation of the aortic compliance.
The aortic compliance can be obtained from a fuzzy logic based automatic contouring method, thereby avoiding the important interobserver variation often associated with manual tracing.
主动脉顺应性定义为主动脉横截面积的相对变化除以动脉压力变化。磁共振成像（MRI）是用于主动脉顺应性无创评估的一种有用成像方式。然而，手动描绘主动脉轮廓存在显著的观察者间差异。为了从电影MRI估计主动脉顺应性，阐述了一种基于模糊逻辑理论的方法。
使用心电图门控电影MRI序列对7名健康志愿者和8名马凡综合征患者进行检查。在肺动脉水平的横断面上对主动脉进行成像。开发了一种基于模糊逻辑的方法来自动检测主动脉轮廓。
通过我们强大的自动轮廓描绘方法，主动脉横截面积的计算可实现主动脉顺应性的估计。
可通过基于模糊逻辑的自动轮廓描绘方法获得主动脉顺应性，从而避免通常与手动描绘相关的显著观察者间差异。
