http://www.k-wave.org/forum/topic/simulating-ultrasound-speckle-noise Support for the k-Wave MATLAB toolbox en-US Wed, 13 May 2026 00:11:51 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/simulating-ultrasound-speckle-noise#post-4656 Wed, 23 Jul 2014 12:33:48 +0000 Anthony 4656@http://www.k-wave.org/forum/ <p>Hi Farhad,</p> <p>The basic idea is to set a heterogeneous distribution of sound_speed, density etc... for your medium.<br /> <code>medium.sound_speed = yourSoundSpeedMatrix</code><br /> <code>medium.density = yourDensityMatrix</code></p> <p>It works pretty well to get something that looks roughly realistic. </p> <p>If you want something more precise, you may find this discussion interesting:<br /> <a href="http://www.k-wave.org/forum/topic/modeling-heterogeneity-of-real-tissues">Modeling heterogeneity of real tissues</a><br /> Unfortunately, I did not find the time to go deeper into the subject...</p> <p>Best regards,<br /> Anthony</p> <p>PS : By the way, maybe Bradley's student has published something now :-) </p> http://www.k-wave.org/forum/topic/simulating-ultrasound-speckle-noise#post-4655 Tue, 22 Jul 2014 13:06:23 +0000 f4rhad 4655@http://www.k-wave.org/forum/ <p>This is what I want to do:<br /> <a href="http://8pic.ir/images/uo48la69a8k8cuxlcn27.jpg" rel="nofollow">http://8pic.ir/images/uo48la69a8k8cuxlcn27.jpg</a></p> <p>but I do not want to add gaussian noise this way!<br /> I want to add the normal noise of ultrasound transducer(speckle) with simulation of sonography.<br /> is there any features helping me out?</p> <p>-BR<br /> Farhad </p>