说明：  Yu s 提出的SRAD模型中所用仿真血管超声波(ultrasound)程序.修改底图和参数可以生成自己的超声波仿真图象.感谢源程序作者Zhang fang(论文Nonlinear Diffusion in Laplacian Pyramid Domain for Ultrasonic Speckle Reduction的作者)
(this program simulate US RF data of a carotid artery model using Yu s RF data simulation method in SRAD. which can be used as a model example to gain other similar ultraound simulation.thank for the original author Zhang fang.)