Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway.
Ultrasound Med Biol. 2012 May;38(5):889-96. doi: 10.1016/j.ultrasmedbio.2012.01.007. Epub 2012 Mar 6.
The purpose of this study was to develop a simulation model for evaluating methods for ultrasound strain estimation in abdominal aortic aneurysms. Wall geometry was obtained from a real ultrasound image and wall motion was simulated applying realistic blood pressures to a nonlinear viscoelastic wall model. The ultrasound simulation included speckle, absorption and angle dependent reflection. Gaussian white noise was added to simulate various noise levels. Despite not fully replicating real ultrasound images, the model simulated realistic circumferential variations in intensity and realistic speckle patterns and has potential for initial evaluation of strain estimation methods.
本研究旨在开发一种模拟模型，用于评估腹主动脉瘤超声应变成像方法。采用真实超声图像获取管壁几何结构，通过对非线性黏弹性管壁模型施加真实血压模拟壁面运动。超声模拟包括散斑、吸收和角度相关反射。加入高斯白噪声以模拟各种噪声水平。尽管未能完全复制真实超声图像，但该模型模拟了强度的真实圆周变化和真实散斑模式，具有对应变成像方法进行初步评估的潜力。
