http://www.k-wave.org/forum/topic/correct-understanding-and-definition-of-organization-parameters Support for the k-Wave MATLAB toolbox en-US Tue, 12 May 2026 23:30:39 +0000 http://bbpress.org/?v=1.0.2 q http://www.k-wave.org/forum/search.php http://www.k-wave.org/forum/topic/correct-understanding-and-definition-of-organization-parameters#post-7482 Wed, 06 May 2020 03:58:17 +0000 jackYANG 7482@http://www.k-wave.org/forum/ <p>Hi Brad,<br /> thanks for your patient reply. </p> http://www.k-wave.org/forum/topic/correct-understanding-and-definition-of-organization-parameters#post-7455 Fri, 01 May 2020 08:25:51 +0000 Bradley Treeby 7455@http://www.k-wave.org/forum/ <p>Hi Jack,</p> <p>I've answered this before in <a href="http://www.k-wave.org/forum/topic/how-to-generate-3d-structure-of-a-real-muscle">this post</a>.</p> <p>Each of the parameters can be defined as a matrix. See for example, the <a href="http://www.k-wave.org/documentation/example_ivp_heterogeneous_medium.php">Heterogeneous Propagation Medium Example</a> in MATLAB. The absorption and nonlinearity can be defined in the same way. </p> <p>Brad. </p> http://www.k-wave.org/forum/topic/correct-understanding-and-definition-of-organization-parameters#post-7443 Tue, 28 Apr 2020 03:56:44 +0000 jackYANG 7443@http://www.k-wave.org/forum/ <p>Hi everyone,<br /> I have been simulating phased-array ultrasound focusing through multiple layers of biological tissue (skin, fat and muscle)，at present, I am confused about the definition of these organizational parameters, can you help me find the accurate parameters(media.alpha_power,media.alpha_coeff,BonA)? If my media.alpha_power =1.1, f=1MHz, how can I define the correct media.alpha_coeff with three layers of organization.Also, who can tell me what BonA is,how does it affect the simulation of the kwave sound field,I know it can be defined as a matrix form,How do I correctly define nonlinear parameters from the literature or database to kwave， and it  would be nice to get your answer. </p>